Malicious PDF — malware analysis report

Static analysis result for SHA-256 67f547a15b97bd26…

MALICIOUS

PDF

40.3 KB Created: 2020-10-10 20:47:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e3e47363be6b4b9cdff0875301e7cf06 SHA-1: 49bc25e8fddc3c6539bf4a5fa9768f21de115021 SHA-256: 67f547a15b97bd2614f83e9befba3884ba0d361efb554fafc57606e4ae4d8972
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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://ttraff.club/pify?keyword=minecraft+1.0+9+apk+indir+cepde In PDF document text
    • https://site-1043963.mozfiles.com/files/1043963/wopenawonobaxipuga.pdfIn PDF document text
    • https://site-1040244.mozfiles.com/files/1040244/26355869279.pdfIn PDF document text
    • https://site-1038299.mozfiles.com/files/1038299/nonevamapap.pdfIn PDF document text
    • http://files.cathyherndon.com/uploads/1/3/1/4/131406412/4200945.pdfIn PDF document text
    • http://files.dngdecor.com/uploads/1/3/0/7/130776101/febuwaxenim-dugubuk-fugepunizotojip-sufewif.pdfIn PDF document text
    • http://gifabi.dymonfitness.com/uploads/1/3/1/0/131070161/dotegijel_sidonokuponuk_wuxapomudawi_kuwezo.pdfIn PDF document text
    • http://files.crossarrowkennels.com/uploads/1/3/0/8/130873717/da4331079.pdfIn PDF document text
    • http://files.peachtreecornersrestaurantweek.com/uploads/1/3/2/7/132710491/628647b7e924.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/5c094050-f36b-469d-95ab-b883184b28d5/85515268273.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/3398/8767/files/the_queen_of_the_tearling_ita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/6656/4254/files/power_bank_a5_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/2880/2468/files/mario_party_6_iso_mega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/2749/2764/files/22761129796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2815/1959/files/star_wars_trumpet_sheet_music_may_the_force_be_with_you.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_off00005e75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E75 5388 bytes
SHA-256: e39f372746e51ecc9671c2628f23492266ff64be59b216f4cb88083f851e703a
font_01_sfnt_off000070e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70E1 10424 bytes
SHA-256: 20e646c7705211100a90de9a18d5fab036da1b0ac9db1bdaeb7c61db13577a1c

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