Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ccaa71a418af0fc…

MALICIOUS

PDF

70.2 KB Created: 2021-05-23 12:26:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01371a4b4c13fe7cf256ea1584145fe1 SHA-1: 9a97dba19af94f3ade0c49e6b36d454703b90088 SHA-256: 6ccaa71a418af0fc441939b25ee66031f1db2b55c90b486222fbc7726bdfe8e4
156 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are hosted on compromised WordPress sites. The document body, though heavily obfuscated, appears to be a lure related to prayer, likely to trick users into clicking malicious links. ClamAV and ML classifiers confirm the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/e7f8a9124281ff0e36a9ffdebfba0185/mekijowabikatifoxile.pdf
    • https://www.llgnjinc.com/wp-content/plugins/super-forms/uploads/php/files/ce0c4eae43d876111f56e814cb1dcb02/46287975231.pdf
    • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/9ba062c52e5326d9971888d134f79b6e/zexixativijodozonog.pdf
    • https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f73e941c97---53622611681.pdf
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/64sp7s52nbmdu2uo71di24pm80/20369973952.pdf
    • https://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/f11c6a0fa0d5350cd15f4c6c855bbd07/42212795544.pdf
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073773be3188---beludokujamagakimume.pdf
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/n2fp113eiumh560a08fpdk0286/62130416006.pdf
    • http://www.greenbriarpropmgmt.com/wp-content/plugins/super-forms/uploads/php/files/019036a1e922e36e70347e4d3788d7aa/rarikofufijuk.pdf
    • https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/2a163a461847af56417ae0a7afa2475c/gelaxuzipunopesumem.pdf
    • https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/4a8d05f7feed9505b220a8edf156d7c9/vufawifunelakaletafewup.pdf
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160855b7d046be---sepeweligaxud.pdf
    • https://canadianrelocation.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607d63330220b---neguwazogamufaxoripoluj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=how+do+you+pray+the+rosary+at+a+funeral
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6b2.bin
cc11f6106750a827a78e5a1ddf86e74a72f4013c01dd2bf1766e563f5891e8b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B2 5284 bytes
font_01_sfnt_off0000e8b7.bin
bc4c3484a900e970019e7eb106ae653b352dda410272c7c94f5c92aeb5b2a785		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8B7 10368 bytes

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