Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a13963f1af7ea18…

MALICIOUS

PDF

49.0 KB Created: 2020-10-11 13:04:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 4f8229c14b7205a7e8e76b14f99e3312 SHA-1: fb0f4e086e2b65f6dc5e8597b2d2dc8172411ca5 SHA-256: 0a13963f1af7ea1831e2a3aabc44237ca950d2ef81dab1187714de860f29dbd8
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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.link/pify?keyword=first+alert+brk+3120b+smoke+alarm In PDF document text
    • https://site-1039278.mozfiles.com/files/1039278/fufezonelotasemazebazolu.pdfIn PDF document text
    • https://site-1036640.mozfiles.com/files/1036640/72825966514.pdfIn PDF document text
    • https://site-1042976.mozfiles.com/files/1042976/87902556795.pdfIn PDF document text
    • https://site-1040034.mozfiles.com/files/1040034/6582508226.pdfIn PDF document text
    • http://files.cottondownsouth.com/uploads/1/3/1/4/131437593/68f5e82128.pdfIn PDF document text
    • http://xojirilor.dubaicctv.net/uploads/1/3/2/8/132814930/3352247.pdfIn PDF document text
    • http://files.projectq.co.uk/uploads/1/3/0/7/130776162/75d9fdc0531.pdfIn PDF document text
    • http://files.markwkane.com/uploads/1/3/0/9/130969237/43ca5d1df3.pdfIn PDF document text
    • http://files.bardenhagenberries.com/uploads/1/3/0/8/130813972/mobog.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/1/0437/9390/7869/files/knight_leveling_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/1701/3912/files/37631065400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5647/1959/files/xozoguzit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/4797/6611/files/xixikuterowenadifu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1df4bde-c543-480a-84b6-63c171fb66af/gujadi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b821235b-f9d6-4cd1-b161-c173722f6014/88775562181.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87155a9c-8ab3-4be3-a1c2-77745a5614b7/77764512783.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9423d2a7-c35d-4ef7-9ad6-0b8b8208ec36/xemasusamiwojesuguke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84a97995-6b33-4db1-8944-e80f72bc3985/48565968253.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008193.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8193 5480 bytes
SHA-256: 0ff9b562c2b96395e78eddec1c21c9c455a2fe31feb3321ef94a56a672e515e9
font_01_sfnt_off00009421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9421 10172 bytes
SHA-256: 6c4d1732bf7c6cbbf3fe22c470f2aeee4b22cdcc1a9bd79e89742ef95df087ba

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