Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c06e281fe7adfde…

MALICIOUS

PDF

48.3 KB Created: 2020-10-16 08:15:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a8d1d00213bf3df9ce3aa2dee1253363 SHA-1: 25c68c5eb89444335038021bd2db08f87eb2f052 SHA-256: 7c06e281fe7adfdec3aa214d8318a0d08576d5e7d11b14e18b22f3110a6ba202
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://gettraff.ru/pify?keyword=goat+simulator+payday+trophy+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366627/normal_5f875f14b5dd2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366309/normal_5f8766013b218.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366623/normal_5f873de768df6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366408/normal_5f872c3133024.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366018/normal_5f87d56d6ffb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368248/normal_5f883692cd41c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366360/normal_5f888d122ef38.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/1/0266/7675/6669/files/aircraft_structures_for_engineering_students_solution_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/5272/8230/files/doluzurejazag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/7426/3456/files/xevut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/4649/8204/files/la_princesa_y_el_sapo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3718dde-eab4-493d-b49a-3810b8230d10/14643078676.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da031b7c-0aaf-4c8f-83ed-d4fe26dc3ad0/67004104524.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf45847e-eceb-4a5d-a208-c9652dbf8b7d/68041530304.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b739d782-965c-4d0c-b6b9-281f769f1e67/gudegijezolirogolato.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb5fc122-c912-4f3c-bf6d-56127e9d6d52/sewegasodelazejewet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0055f604-1482-46ce-b8c8-a48b28dd849c/xexegafun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/319d65fd-c8de-475a-aa43-36ee3cad9800/ledelusezixamoso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e59baa5d-ea35-4aaa-906b-7165e90c54e5/66448154715.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c584728e-b44d-4cbd-b1fd-1bd57f0adad0/69526130672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/2532/2143/files/javobowafuri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0715/8690/files/fnaf_1_download_free_windows.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/8824/9757/files/co_op_brewery_business_plan.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_off00007d19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D19 5508 bytes
SHA-256: 9b3ecdad6832fd4fa63d822c242faa2f0fbb23c87faf95b171eee4b9813a4c36
font_01_sfnt_off00008fb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FB5 10416 bytes
SHA-256: 2b1766598a853d40d46e3c1d02854a95e7aed7942e6e11f9789536dd387d6958

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