Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e675a8522f38c69…

MALICIOUS

PDF

69.1 KB Created: 2021-03-11 05:01:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a5d321e25154b75a5e0f6b6dd395329d SHA-1: 57c005ac65c3f8b312831b902a599293de17e998 SHA-256: 1e675a8522f38c69ef5829edc8d3b2bc8924ffa5ea15e541a5826b9ae6d8f501
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://vilenefex.ru/wix?keyword=nominative+and+objective+case+pronouns+quiz PDF link annotation
    • https://cdn.sqhk.co/marezotije/jVvkXq3/itep_exam_full_form.pdfIn PDF document text
    • https://cdn.sqhk.co/mejofiwog/gvFieCr/93846092252.pdfIn PDF document text
    • https://romidemifavev.weebly.com/uploads/1/3/1/8/131857114/0d9837f.pdfIn PDF document text
    • https://cdn.sqhk.co/kigimijexap/3jfiart/bandai_namco_holdings_stock_price.pdfIn PDF document text
    • https://cdn.sqhk.co/motanunika/S3Ogeig/electric_guitar_tuner_online_microphone.pdfIn PDF document text
    • https://cdn.sqhk.co/lojosexotak/jNnjbhd/raid_shadow_legends_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/goropakuvoge/ihtl1PS/ac_market_latest_version_app.pdfIn PDF document text
    • https://cdn.sqhk.co/jizapamilizo/ofiijbi/97073605710.pdfIn PDF document text
    • https://cdn.sqhk.co/busibelifiv/fGgciiZ/voltage_drop_meaning_in_gujarati.pdfIn PDF document text
    • https://potisejomi.weebly.com/uploads/1/3/6/0/136092970/452d0e3.pdfIn PDF document text
    • https://cdn.sqhk.co/dodazija/ucdbiaA/panda_vpn_for_pubg_mobile_download.pdfIn PDF document text
    • https://fewefemuge.weebly.com/uploads/1/3/4/3/134372507/f5aefd3c5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d1159ab4-cbf5-42eb-897b-83a5e94cd7da.filesusr.com/ugd/536122_4da3531e2d2d43b5ad8d22c206796a8f.pdf?index=trueIn PDF document text
    • https://f6ce3cfb-f922-470c-9e0e-eaf724001b0e.filesusr.com/ugd/defcb2_81a4264852b24c5e81e69efba588bb83.pdf?index=trueIn PDF document text
    • https://b3dfd9c9-1030-471f-a26d-814ea73dbccc.filesusr.com/ugd/d97afa_c89d37239b204687a52debdd150dc9f4.pdf?index=trueIn PDF document text
    • https://eb62986f-0112-409a-9ebe-777412bc5c19.filesusr.com/ugd/26938b_9053420eba0f484385de2e70693bd64b.pdf?index=trueIn PDF document text
    • https://8c285b57-3156-47ce-881b-df665acc117b.filesusr.com/ugd/8d46c2_ba95a652135f433f9b73d2d700832404.pdf?index=trueIn PDF document text
    • https://35548484-ce42-4b18-9d9d-834326683263.filesusr.com/ugd/a221b6_f9b83af8cbe343dfbb893d2d51a1e9b4.pdf?index=trueIn PDF document text
    • https://12a3aa02-022d-4218-8efb-90aa4388683d.filesusr.com/ugd/6dfd9b_495cb4e4804443a698c30cd468ad2b1b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/123c0787-a5b5-4b37-8090-ef4ea32b3809/nafijewota.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd665553-d70a-4728-84c4-a5836a8dcaa4/gobodopuwijewizazixelepuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abe6ee97-a176-4178-adb5-c58c573f5b1a/60266796162.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD131 5608 bytes
SHA-256: dc97a06ba910eeec527c8a78a30849a9dc43f9840aa227f6bf98f0cbfee1f5bd
font_01_sfnt_off0000e437.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE437 10304 bytes
SHA-256: c0bb3cbba3daad3f8c39d7e7b00dc7794019d99a62e0555b56c2da937e348ea1

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