Malicious PDF — malware analysis report

Static analysis result for SHA-256 6220cbd53bd0f1cb…

MALICIOUS

PDF

48.1 KB Created: 2020-10-16 11:58:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ffd2c04f1ed1096874e724d706f1ca39 SHA-1: 6ed424fc0deed6a69af4707478a8910b599f827a SHA-256: 6220cbd53bd0f1cb3ffa052b2ec9696e5621cdba2697665464a5ab0d46deb198
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/123?keyword=pull+up+push+up+workout+pdf In PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/kadijamiruvinugeno.pdfIn PDF document text
    • https://buxivadoga.weebly.com/uploads/1/3/0/7/130740323/8469f0691.pdfIn PDF document text
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/919a8b4c.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/xududev-ledavodu-jatulivarolaxe-bixebenal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366045/normal_5f88d91e3d727.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374196/normal_5f89414abb4a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366335/normal_5f87fb9460aa2.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/1/0495/9846/4152/files/feritibuxusi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06f5db79-de56-454e-9988-13a2dad4309c/vuxunekefijatasuna.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2349d1b4-d59c-44fa-9709-a7018c02162c/50764973129.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe4e205f-a0ab-4e5e-a357-421488163f78/917182169.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e61d678-b01d-44f6-bed7-1ea9601a8b14/86099911282.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e94dd34a-8e0a-471d-8327-da5488144c55/gojabotew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fcb204a-c70d-469a-b881-7bb7e17da4f0/kumodeleki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d52dbba-4824-4f33-8a51-65a9395e5a31/vulizutozafigilixozijemar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8401075-0f69-48bc-a3d5-d27ed30d0c5a/vakukuzanapozegalipaperaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7548/5339/files/travel_fanny_pack_passport.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/0874/3351/files/jirorosipuguzizud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2940/5108/files/zizoretawapesax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1131/8182/files/spider_man_far_from_home_mp4_drive.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_off00007e1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E1D 5076 bytes
SHA-256: 429ecd60870ed60d613b0cf4fe1c8a70f79b1eb658d373a5af877292624ab6b3
font_01_sfnt_off00008f6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F6B 10616 bytes
SHA-256: a1eeb95b5a5e8b6b4901ec71205c210836b76c6c966a7fb1ba80f6ece77076fe

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