Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ad3988272e7b884…

MALICIOUS

PDF

40.6 KB Created: 2020-10-08 21:14:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c18da703ef4be16f37def38e7b39bf3d SHA-1: db36c1c9a2db5b5a6745f1096125576d2295f4be SHA-256: 6ad3988272e7b8844bf28c1f0710753749a5458dac0a9da1bbba2ad73064d0ed
172 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://cctraff.ru/strik?keyword=life+shaper+by+integra+manual In PDF document text
    • https://site-1039361.mozfiles.com/files/1039361/bidizitaveri.pdfIn PDF document text
    • https://site-1040681.mozfiles.com/files/1040681/zuromoja.pdfIn PDF document text
    • https://site-1040506.mozfiles.com/files/1040506/fageriwujuzivujojomiziwut.pdfIn PDF document text
    • http://najutu.kerryltownsend.org/uploads/1/3/1/6/131636627/9b98185b4be46.pdfIn PDF document text
    • http://files.deprofundisprods.com/uploads/1/3/1/8/131858540/2836283.pdfIn PDF document text
    • http://files.nicoledporter.com/uploads/1/3/1/8/131856330/1690ec247ce1810.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/de0ec50c-1ccf-4a5e-ae25-3cec50131307/mijumusivokano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c91abac-253d-49f3-8796-971e4784d8f4/ziluze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28c378e1-c13e-4945-a638-55b4c43a03b3/jatitewipusunodotelumuka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1ee08b1-905b-4476-95fe-946f3c36efb2/89981662782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/1885/8908/files/download_nba_live_mobile_hack_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6207/3246/files/get_ready_do_done_template.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_off00005e02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E02 5496 bytes
SHA-256: 7abc294ce9358fb0bc363e5a48304adcbc7b6bb66aec9ee39da13c747af62177
font_01_sfnt_off0000709a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x709A 10976 bytes
SHA-256: 9d5f36cd6c7312a1aa1f44f19035827a688fac38ce3dffc82663a988eaec295c

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