Malicious PDF — malware analysis report

Static analysis result for SHA-256 dae12a32fb4a8589…

MALICIOUS

PDF

54.8 KB Created: 2020-10-03 02:20:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e8098e6e5d238a9beccda6447c4a6a56 SHA-1: e55cd3a1a78f1a2749b2084b5970494a53b331db SHA-256: dae12a32fb4a8589a3c8da3bfe36ab586e2b4bb4237c4ad641cf74b4d4dcfdcb
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://ggtraff.ru/strik?keyword=impresora+brother+dcp-t510w+manual In PDF document text
    • https://site-1036824.mozfiles.com/files/1036824/gewiji.pdfIn PDF document text
    • https://site-1037029.mozfiles.com/files/1037029/44243842447.pdfIn PDF document text
    • https://site-1038670.mozfiles.com/files/1038670/supuxitekezupodopa.pdfIn PDF document text
    • https://site-1036962.mozfiles.com/files/1036962/62799751961.pdfIn PDF document text
    • http://zoxezi.tritrackmodifieds.com/uploads/1/3/0/7/130775795/xekelenexilig-fadad-kovojokidinesex-japuzuka.pdfIn PDF document text
    • http://dovid.thesiftertv.com/uploads/1/3/0/7/130740558/lofigazawoxenapenisa.pdfIn PDF document text
    • http://vewovogug.ssaaalbury.com.au/uploads/1/3/2/3/132303195/savotuwatotejizadoge.pdfIn PDF document text
    • http://ladagabo.indyanda.ca/uploads/1/3/2/3/132303388/jokufuz.pdfIn PDF document text
    • http://files.thefamilyfunband.com/uploads/1/3/0/7/130740551/xezudibegiwimorokila.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6354/1913/files/season_9_tier_100_skin_challenges.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/1658/6133/files/labulosedaborajibonezexov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8877/5830/files/69936845280.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb5e2c47-0402-4783-a2b4-4cdd855386a2/60059642089.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfa85ce0-2df2-4420-b3f6-9762ae29c678/92456826864.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72F5 5832 bytes
SHA-256: d058bdc202e0065433d160a8165bf84aae770a38d4533e9ab576b43dd8881f70
font_01_sfnt_off000086c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86C1 16404 bytes
SHA-256: 2d975c07e2d677c56da98f91a36598b35c41c774d92a58e4648364d4b73e130c
font_02_sfnt_off0000b8d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8D1 16240 bytes
SHA-256: 281214d1119d96f3a8ebe36682ff3c94e77595198e0ed7d049f81fad77dcdf11

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