Malicious PDF — malware analysis report

Static analysis result for SHA-256 93c789b18f26997b…

MALICIOUS

PDF

112.3 KB Created: 2021-09-05 21:09:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: a4fe2e9b3f5b55f6866b02e59950d459 SHA-1: 3b64c93b051100908b5c58d0d70cdade7eeb19c7 SHA-256: 93c789b18f26997bfba3b566654c4125f921a950f05662de4dc464ebbb3be694
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links pointing to various domains, many of which appear to be part of link farms or compromised CMS uploads, suggesting an attempt to redirect users to malicious websites. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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://nomylo.ru/uplcv?utm_term=data+analysis+with+spss+pdf PDF link annotation
    • http://chandravanshi.com/userfiles/file/73224793872.pdfIn PDF document text
    • http://hotstamping.pl/files/file/mepojiwavepo.pdfIn PDF document text
    • http://melly-incendie.fr/img_db/69477657381.pdfIn PDF document text
    • https://ijp2.com/contents//files/46109508402.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b057a56f5fa---5741545767.pdfIn PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/160f31b6f9d7ce---89081318565.pdfIn PDF document text
    • http://jongauger.com/ckfinder/userfiles/files/xigodorirejido.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16078a684f059e---69156307106.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/p5m34m71nm4b4mgigmd2mnojo4/tetutuvarodefagok.pdfIn PDF document text
    • http://jirehenl.com/userfiles/file/080149422952.pdfIn PDF document text
    • https://eltechma.com/zdjecia/fck/file/ramonulegi.pdfIn PDF document text
    • http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a38a8f43262---32128459031.pdfIn PDF document text
    • https://gregor-biffiger.ch/userfiles/file/melokakamajevozuvazabow.pdfIn PDF document text
    • http://akicgiyim.com/userfiles/file/toremo.pdfIn PDF document text
    • https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/e6cb57da135f17b05eb318b69c454bd1/mokobazisesifebij.pdfIn PDF document text
    • http://playbabydoll.com/userfiles/file/xepodovix.pdfIn PDF document text
    • http://pajurioverslas.lt/ckfinder/userfiles/files/sogaxa.pdfIn PDF document text
    • https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/rtv6ssi4ccosth4l5ps1a6hr0b/gozukep.pdfIn PDF document text
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/16085eedbebaef---velufuwevumewasililewog.pdfIn PDF document text
    • https://lesura.net/userfiles/file/97750198482.pdfIn PDF document text
    • https://zippy-inc.com/app/webroot/userfiles/files/42787813656.pdfIn PDF document text
    • https://www.seblocation.com/ckfinder/userfiles/files/wakijofenakimodonapo.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_off00014ff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14FF5 10444 bytes
SHA-256: de96841b4a72cdf46e94b468a8e431aa713263d7a094852a229ce8fc09d1f5a0
font_01_sfnt_off000167a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x167A2 19584 bytes
SHA-256: acd3373b2d2e14cbd9cc0fd65acd11ef07e915b208807d5d0672501cbaf76b61
font_02_sfnt_off00019b4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19B4C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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