Malicious PDF — malware analysis report

Static analysis result for SHA-256 01a79cf5227f48e1…

MALICIOUS

PDF

40.9 KB Created: 2020-10-03 15:43:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 6c34e498b8f71c128dbfb61a6b94c98f SHA-1: 1b2998f41cb096757098bc3cb82aad4218aad7a2 SHA-256: 01a79cf5227f48e18190dc551ac9a94963239f5fe8edbe31471441e233244ba9
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=paralisis+del+plexo+braquial+pdf In PDF document text
    • http://ligiji.kathaleenkateoliverson.com/uploads/1/3/1/3/131398069/1740639.pdfIn PDF document text
    • http://tulakolot.valerius.us/uploads/1/3/0/9/130969895/58fafc8.pdfIn PDF document text
    • http://files.autoencyclopedie.com/uploads/1/3/1/4/131438069/zipijajotame.pdfIn PDF document text
    • http://kidiset.thewordwasmadeflesh.org/uploads/1/3/1/4/131411341/8325351.pdfIn PDF document text
    • http://files.eracognita.com/uploads/1/3/0/7/130740625/jelotajodinow-widutatalupogem.pdfIn PDF document text
    • https://site-1039253.mozfiles.com/files/1039253/debej.pdfIn PDF document text
    • https://site-1039925.mozfiles.com/files/1039925/68901728836.pdfIn PDF document text
    • https://site-1038835.mozfiles.com/files/1038835/4215843124.pdfIn PDF document text
    • https://site-1039658.mozfiles.com/files/1039658/3880059806.pdfIn PDF document text
    • https://site-1038717.mozfiles.com/files/1038717/rukozavizorigitudirebule.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/1/0438/0898/1153/files/nombres_de_periodicos_de_mexico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/6656/4254/files/airhawk_seat_cushion_reviews.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0475/4623/7094/files/coleman_fast_pitch_tent_8_person.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4435/9322/files/1117591649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0728/5147/files/74978277987.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_off00005a15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A15 5372 bytes
SHA-256: ded6990419fb01aa637418530676777a1e3b5716d8f56805c3c42822cabc2cab
font_01_sfnt_off00006c60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C60 13644 bytes
SHA-256: 75fff65d88f0867a425e02d69ffb34379384c8112b6b9092cf5a1dfb88b0961c

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