Malicious PDF — malware analysis report

Static analysis result for SHA-256 e85ed78c8d6b0440…

MALICIOUS

PDF

75.4 KB Created: 2021-04-04 05:07:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f47b68e6c99b3860dbe86961cfc5c5d7 SHA-1: 72771d8e98ce9127ca0d80db94c96aa1249bd6cb SHA-256: e85ed78c8d6b04403478288159dd4dd6473dfac1db18bb543e4fc3ca0d10f62a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, with a significant number pointing to PDF files, suggesting a link farm or redirection mechanism. The embedded URL 'https://ponafet.ru/wix?keyword=animated+stories+from+the+bible+david+and+goliath' indicates a lure related to biblical stories, likely to disguise malicious intent. The ClamAV detection and ML classifier strongly indicate malicious content, consistent with a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ponafet.ru/wix?keyword=animated+stories+from+the+bible+david+and+goliath
    • https://cdn-cms.f-static.net/uploads/4418981/normal_603c7fc14db2a.pdf
    • https://wojaginobaxap.weebly.com/uploads/1/3/1/8/131857211/bijin.pdf
    • https://punulizi.weebly.com/uploads/1/3/5/9/135957491/1604335.pdf
    • https://puxosuloboja.weebly.com/uploads/1/3/4/6/134677226/zefuraguxe.pdf
    • https://buwigare.weebly.com/uploads/1/3/5/3/135308802/8005760.pdf
    • https://cdn-cms.f-static.net/uploads/4463266/normal_601f5b9a39d42.pdf
    • https://fegajasun.weebly.com/uploads/1/3/4/5/134502742/zotozudizaselose.pdf
    • https://turabebusaweni.weebly.com/uploads/1/3/1/4/131438207/povubujexas_mopuxu_fuzufowobosofa.pdf
    • http://xabofawowu.22web.org/moseper.pdf
    • https://cdn-cms.f-static.net/uploads/4465125/normal_602f2b6369de8.pdf
    • https://cdn-cms.f-static.net/uploads/4369768/normal_5fd0a523576ef.pdf
    • https://vidigesiwixir.weebly.com/uploads/1/3/3/9/133997627/lisokozo-riwejipikegi-ziwufek-gawepiwapominas.pdf
    • https://vafopizinenited.weebly.com/uploads/1/3/4/4/134480139/6422788.pdf
    • https://kuruxeronujupo.weebly.com/uploads/1/3/4/4/134477992/kexekifiwav.pdf
    • http://zesizejo.22web.org/65300915638.pdf
    • https://cdn-cms.f-static.net/uploads/4369774/normal_5fe9b69f55184.pdf
    • https://walisisatar.weebly.com/uploads/1/3/4/5/134576301/vedigibofa-lopozatew-veramosilo-tozemula.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pokorevalaxex/pugapeko.pdf
    • https://s3.amazonaws.com/jevedijadiki/sogutul.pdf
    • https://a6132035-7465-4fe4-be4e-2faa96c22dab.filesusr.com/ugd/cf950b_99bc0bfcf727414a8abb076e3309dce3.pdf?index=true
    • https://s3.amazonaws.com/nasitevu/us_army_rangers_green_berets.pdf
    • https://2e4b0ed6-c237-476e-b23b-7c95f147629f.filesusr.com/ugd/30e930_4874cefa8f984b829f3883cce814b54c.pdf?index=true
    • https://a7da3e60-63c8-46c1-a846-eab7df628ed2.filesusr.com/ugd/bba345_0e3a5bf317d2471184f073c00014be10.pdf?index=true
    • https://ed4d48c2-14ea-47f5-a89a-b82193587323.filesusr.com/ugd/8ce377_b6fc400687924999baec29eeb0e4977e.pdf?index=true
    • https://6f46ab72-b8e3-4ec2-8f01-cb5d6491dab7.filesusr.com/ugd/9a120b_04e45aa26d454582a930afd2bd35185e.pdf?index=true
    • https://s3.amazonaws.com/wemazun/india_visa_application_form_for_nigeria.pdf
    • 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_off0000e64c.bin
6eed94381bbfe7bad7cc2bdb6bbb6b12116e49278033111731a393703c04a20a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE64C 5508 bytes
font_01_sfnt_off0000f8e2.bin
b08e61e40d7df2137622d1dea35977d6109ad0b697ee887d2d446a1b479afba2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E2 11296 bytes

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