Malicious PDF — malware analysis report

Static analysis result for SHA-256 54612cfe2027c6d8…

MALICIOUS

PDF

106.1 KB Created: 2021-07-19 04:45:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 20e1c6549dae1aec25e2be6543a20ebf SHA-1: 106464af5afc59bfc627136ba1a1a23638aa5770 SHA-256: 54612cfe2027c6d851eea160cc5efcfff8c2c3efe6aed1d9b316d5b1e604bd42
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple potentially compromised or disposable hosting sites, which is a common tactic for phishing or malware distribution. The presence of numerous external URIs and link farm heuristics strongly supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

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 http://trendymamy.pl/userfiles/file/71503068223.pdf In PDF document text
    • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/40e160f796fdf46a8cd7833499ef9043/48150180283.pdfIn PDF document text
    • https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/318n0jl8b441qvrj4vu4g2bpgv/ragipowapitiseramaku.pdfIn PDF document text
    • https://soechi.net/userfiles/file/61101996399.pdfIn PDF document text
    • https://etcbt.com/userfiles/file/vegatagoluziw.pdfIn PDF document text
    • http://ciaooo.ru/uploades/userfiles/file/sefitetigafitezosevob.pdfIn PDF document text
    • http://jessicarossitto.com/clients/7/7c/7c16b8c799dae9ffcd1258f31d6ff645/File/terowoganave.pdfIn PDF document text
    • http://centromp.it/userfiles/files/zowufu.pdfIn PDF document text
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b744809ae1---lezikijixotivesumovigulu.pdfIn PDF document text
    • http://saopauloairporttransfers.com/ckfinder/userfiles/files/13059760758.pdfIn PDF document text
    • https://mancomunidadvaldizarbe.com/userfiles/files/8173780900.pdfIn PDF document text
    • http://saens-jpn.com/ckfinder/userfiles/files/69642243427.pdfIn PDF document text
    • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f26c2e6239---lanobewegusedowasotexudum.pdfIn PDF document text
    • https://liniagdanskzydowo.pl/files/45941121988.pdfIn PDF document text
    • http://mosvag.ru/img/lib/file/65129860257.pdfIn PDF document text
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/06d2c84bd22f8c3355cc2e6721379833/69604736676.pdfIn PDF document text
    • https://needlugs.com/userfiles/files/kutinanikubozo.pdfIn PDF document text
    • http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160add584b81d6---14510060173.pdfIn PDF document text
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160926a471103a---14369765835.pdfIn PDF document text
    • http://vonkoenigsmund.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca49b2a47e---xafekuwu.pdfIn PDF document text
    • http://sanarina.de/ckfinder/userfiles/files/sirotenowimudonimofipiju.pdfIn PDF document text
    • http://vitali-schulz-eiskunstlaufen.de/userfiles/files/52413520087.pdfIn PDF document text
    • http://westmont1970.com/clients/1/1d/1d0046bffbd1a03ca32bb02538d2ceaa/File/sodinafosapifu.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160bde8c89646e---59821376611.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=chicago+fire+mccloudPDF link annotation
    • http://janyska.home.pl/_mjanyska2013/fotki/file/76290787077.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_off00013973.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13973 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001518a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1518A 10684 bytes
SHA-256: 6d9ea9ccb0223f03406dfdd556f9d133faef99874c059773e8b80c3bc7f69961
font_02_sfnt_off000169d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x169D3 18840 bytes
SHA-256: 30f25a464832d124ff87ba0908f23b69357773cf3d35c5abf0908a223ad81f1b

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