Malicious PDF — malware analysis report

Static analysis result for SHA-256 884106fd48f660f4…

MALICIOUS

PDF

67.3 KB Created: 2021-02-27 04:44:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 347abe9e697329573e0e0fb144bca53a SHA-1: 1965c4e0a0b1ec4ed67225126a86a0643aacdaed SHA-256: 884106fd48f660f4ac3ea1480bf170c6b93f171423ec768375987ed6016044b0
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://bologen.ru/award?keyword=how+to+use+viper+remote+start+on+manual+transmission PDF link annotation
    • https://nefikeroliv.weebly.com/uploads/1/3/1/4/131453179/5717558.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415070/normal_602c23cf06efd.pdfIn PDF document text
    • https://putazixuxul.weebly.com/uploads/1/3/1/3/131379121/6685107.pdfIn PDF document text
    • https://cdn.sqhk.co/pofifarim/hBhbgUg/50903125011.pdfIn PDF document text
    • https://cdn.sqhk.co/vozeseseber/EiaSjgj/fina_world_champs_2019_results.pdfIn PDF document text
    • http://helpcenterbusiness.xyz/missing_you_now_song6wper.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423155/normal_603052734d51e.pdfIn PDF document text
    • http://reduslimitalia-official.website/pics_gmp_guide_part_2omua5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376375/normal_6037e3784586e.pdfIn PDF document text
    • https://jasugupaxawuz.weebly.com/uploads/1/3/0/7/130740610/9950753.pdfIn PDF document text
    • https://wuganinaviset.weebly.com/uploads/1/3/1/8/131871642/ruwatafego.pdfIn PDF document text
    • http://believes.space/toronto_alexithymia_scale_tas-_20_questionnairek4uf4.pdfIn PDF document text
    • https://cdn.sqhk.co/pomiziluda/lZhd60u/13448452787.pdfIn PDF document text
    • http://sparzha.club/botim_app_linkhko8j.pdfIn PDF document text
    • https://cdn.sqhk.co/lomasamube/ljdicgI/toronto_visitors_guide_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/semejegofip/g3dgggi/zufaponefatar.pdfIn PDF document text
    • https://konizalo.weebly.com/uploads/1/3/5/3/135388679/badozu.pdfIn PDF document text
    • https://lujukote.weebly.com/uploads/1/3/2/7/132712447/9744355.pdfIn PDF document text
    • https://tavifarexup.weebly.com/uploads/1/3/4/6/134611028/9314855.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420748/normal_600f4dfcd5578.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBB4 5080 bytes
SHA-256: 6f394a2bffcefeae6ad10807ad000cde0de2f47ef6a2318cbd7ebc99cb7cc85c
font_01_sfnt_off0000dcf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF6 10168 bytes
SHA-256: 6071df526b1aeab7d1e4c9c594930bf9bf5acb588479232c493314c6c4c023ce

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