Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ce1acb3f866533f…

MALICIOUS

PDF

86.0 KB Created: 2021-08-04 00:09:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 964ae6f33c24cd4a3c5dd7921a93817e SHA-1: 67a2beda85208126cd67e8261e133bc27d775dd0 SHA-256: 7ce1acb3f866533fb6936994f521993fb44708bcda0c536a0f1b1259e3da1e5d
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded URLs pointing to compromised websites and disposable domains, indicating a link farm designed to lure users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, and the document body was unreadable, but the heuristic findings are sufficient to assess the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://nomylo.ru/uplcv?utm_term=how+to+use+dstv+now+app+on+smart+tv PDF link annotation
    • http://cuhs1981.com/clients/8/82/82ca37c076ec4232796cb58ed009bb3a/File/47741741145.pdfIn PDF document text
    • http://sporteambiente.it/ckfinder/userfiles/files/bidokefobugo.pdfIn PDF document text
    • https://traonguoc.vn/wp-content/plugins/super-forms/uploads/php/files/cfop10499kbtdd120o1gvpd8go/talorapoxujilarijiwasave.pdfIn PDF document text
    • http://orsini-blasioli.it/userfiles/files/figikofawewavidaxovovuz.pdfIn PDF document text
    • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607212110aadf---84906556052.pdfIn PDF document text
    • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/1d497106ac62d89bcc30bc47026dcceb/94776752624.pdfIn PDF document text
    • https://www.parkgest.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160c84fefd1fcf---babesenodib.pdfIn PDF document text
    • http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16076193dec95d---73463017117.pdfIn PDF document text
    • http://strandedtattoo.net/file/34595539787.pdfIn PDF document text
    • https://oncetrabzon.com/resimler/files/pipufegugo.pdfIn PDF document text
    • http://reelproductionshd.com/userfiles/file/polipefa.pdfIn PDF document text
    • https://krone-murten.ch/userfiles/files/lakofamuvulusez.pdfIn PDF document text
    • http://www.vikingmaterials.com/img/zunujomabarigifanomabe.pdfIn PDF document text
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160e43511e4d47---xelobot.pdfIn PDF document text
    • http://king-pro.com/userfiles/files/fepone.pdfIn PDF document text
    • http://china-hold.com/UploadFile/file/20210619033808174.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1607cd9e46b52c---39086253085.pdfIn PDF document text
    • https://moto-trend.cz/public/files/fck/file/1182732008.pdfIn PDF document text
    • http://ats-dz.com/userfiles/file/jizotow.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/72ecc6fc7b7c5800721924892a938bcc/dikaxenu.pdfIn PDF document text
    • http://3e3i.com/UserFiles/file///9830990505.pdfIn PDF document text
    • http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608336b78d54f---pamuponigikuvilafivakote.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10604 16872 bytes
SHA-256: 10d2b7130b3330e49e8dcec267486fac20e5864141cc725a05f3f9d345f9db92
font_02_sfnt_off000131ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131EA 10660 bytes
SHA-256: 34e3cf6c4890b088aa77219c9f4a63bc9da818e0673b1535a10dfe1af4203ab2

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