Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a104c9cd87bb1f3…

MALICIOUS

PDF

125.2 KB Created: 2021-07-01 22:56:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 3af001f467c852e8af49cf9a4740f76a SHA-1: 571f14f6c46b54d1c3cb9f255b87fdae0c045c57 SHA-256: 5a104c9cd87bb1f3d65dd5ebec59e5ed3e85069966b5eb7fc0a25f1c78d0a9db
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file contains numerous links pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content or phishing pages. The presence of external URIs and link farms are common tactics for distributing malware or facilitating phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9651

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://laborke.ru/uplcv?utm_term=airdroid+airpods+pro+apk PDF link annotation
    • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/f2mcinfahk2epineuck4p3cqr0/lamemagesulowif.pdfIn PDF document text
    • https://iominneapolis.com/wp-content/plugins/super-forms/uploads/php/files/9840912eb4fc12811d5a27c496c012c3/solasul.pdfIn PDF document text
    • http://mea-travel.pl/userfiles/file/riwagugezofove.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e31da6f79f---tatojumif.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/c42a3c37326da103c46f0f363ea157f6/zedidorisoraxugesuk.pdfIn PDF document text
    • http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608a4ad42b719---20118123658.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca31b63995---fasupefitikadad.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/6q795rc7q66bitf31mts1jkobi/norofa.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608dfb206fe8e---84346059388.pdfIn PDF document text
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c073d97bf93---bazovulogib.pdfIn PDF document text
    • http://thietbixanh.net/uploads/files/jumavita.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bbcfade6006---21784228977.pdfIn PDF document text
    • http://jnnycc.org/userfiles/file/98296346233.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e4fe54a149---lekoxe.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a819b5a95dd---tajalixudijesifitosiw.pdfIn PDF document text
    • http://cnzgks.com/userfiles/file///36205325149.pdfIn PDF document text
    • http://purpledoorchurch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607778915ff62---44714037454.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/9pmetdo0iukpoa345p09h4vc1v/xelunesuwe.pdfIn PDF document text
    • http://zge-led.com/luodan/images/userfiles/file/mupowelenelejajesu.pdfIn PDF document text
    • http://cablexconsulting.com/Upload/file/dosiwomezofom.pdfIn PDF document text
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/56nslg3u8t7id4bs1c4vr86v14/semogawezubanumuxize.pdfIn PDF document text
    • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072b2322a80f---waraluf.pdfIn PDF document text
    • http://hintzfamilyreunion.com/clients/1/12/12a2788c5de59b93c87e4eff35998d4f/File/rorotax.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e841.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE841 51264 bytes
SHA-256: f32befd0ec38e0aa75e9fe404bc8752b36c9544262512dc9c9fe951a31d7556f
font_01_sfnt_off000171df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x171DF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000189f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x189F6 10076 bytes
SHA-256: 926a30e9bef9915b40db1a914fb629b90bf8b98ce3ca31d08cf5323e6a04b5e4
font_03_sfnt_off0001a07b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A07B 17592 bytes
SHA-256: a0deb4976e0fd2b21e457953ab333ab2d378d6fb61918a230f10fbc11ab2d4e1
font_04_sfnt_off0001cea6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CEA6 16160 bytes
SHA-256: 27fa49ca30b1f57c6e4f8b99ad1f73ead7010ce1f191e20d716503af09158f46

Open this report in the interactive analyzer, or submit your own file for analysis.