Malicious PDF — malware analysis report

Static analysis result for SHA-256 f07dda0497b4fee3…

MALICIOUS

PDF

40.7 KB Created: 2020-10-06 16:35:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 45ad43e7423d4737bb6d82594bcea4cc SHA-1: db0f645b2f660c7c883e9fde20b5810bac8c9648 SHA-256: f07dda0497b4fee3fe6b67ff58272fab31cc00f01ce7bd5831ba572854de6f25
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://gettraff.ru/strik?keyword=%25C4%2591%25E1%25BB%258Dc+v%25C5%25A9+tr%25E1%25BB%25A5+carl+sagan+pdf In PDF document text
    • http://roborip.fuali-barbados.com/uploads/1/3/1/6/131606060/91bd9.pdfIn PDF document text
    • http://kukatavax.palominoaustralia.org/uploads/1/3/1/3/131398591/wivij_wenerojigekudiv_gizemojumodoga.pdfIn PDF document text
    • http://venet.roomsleuth.org/uploads/1/3/0/7/130739445/dufukosefima.pdfIn PDF document text
    • http://files.cosmicbrushes.com/uploads/1/3/1/8/131858287/rofaxad.pdfIn PDF document text
    • http://files.marinerswelfare.com/uploads/1/3/1/6/131606405/b004495732.pdfIn PDF document text
    • https://site-1040876.mozfiles.com/files/1040876/51652298052.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/1/0435/5738/8440/files/grindr_xtra_apk_cracked_ios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0490/0651/0247/files/53345896558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/7687/9271/files/34500878777.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c664aa3-612e-4d88-81db-b9fd55db6652/64909215744.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cbd389b-4fba-483c-a211-9fc179e8804d/posafawegexafozife.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4665ab9-1fc1-4920-abdb-ff1c4af59606/1922764086.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5035dff2-dac5-4bcf-8f59-328c5e48e477/dunajelubakedigi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/947ea17b-d4e6-44a3-89a1-7c3e669c249e/7528518777.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 6

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_off00005edd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EDD 5836 bytes
SHA-256: 6a81d2106c51be0b5535e0346d8cb2c0260e0c6f40ea1cd81980eb1b239eb5ec
font_01_sfnt_off00007226.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7226 9988 bytes
SHA-256: 4c260cf7fe4cb5edba49762411b2894de8cdaa7d242cfe78af46dea2431027c6

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