Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b7c5c0280019e80…

MALICIOUS

PDF

41.0 KB Created: 2020-08-06 06:58:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 950c948fb27811fdbad4c60fdcae5352 SHA-1: a26f5e00d8b8056c3988a5abb63c23fbc120f981 SHA-256: 2b7c5c0280019e806e4b6fc238066398481d536465fccd96e841634039b1c91d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic indicating it links to known malicious redirector infrastructure, specifically `https://ttraff.com/pify?keyword=upsc+cds+eligibility+pdf`. It also exhibits characteristics of a PDF link farm, embedding numerous external PDF links, with `https://cdn.shopify.com/s/files/1/0434/7995/7669/files/xisuwup.pdf` being a prominent example. The document body, though partially corrupted, contains text related to 'Upsc cds eligibility pdf', suggesting a lure to disguise the malicious link.

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://ttraff.com/pify?keyword=upsc+cds+eligibility+pdf In PDF document text
    • http://files.samuel-a-taylor.com/uploads/1/3/0/7/130775728/dasupuxig.pdfIn PDF document text
    • http://files.sewchicinteriors.com/uploads/1/3/0/8/130814192/ligot.pdfIn PDF document text
    • http://vuxosagak.berberraftingadventures.com/uploads/1/3/1/6/131606407/turimofen-wokokovamewuv-wamalegugamuvi-guxugifexasinuz.pdfIn PDF document text
    • http://files.mrskrout.com/uploads/1/3/0/7/130739233/5641910.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/1/0434/7995/7669/files/xisuwup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94662163826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9405/6861/files/45657136411.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4054/6721/files/zawatixusobifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/33564753027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5354/7677/files/topotobujulimexum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2120/4631/files/40006736832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8904/4383/files/jawijuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6753/9623/files/kewusin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31906594002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7729/6543/files/financial_accounting_basic_concepts.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_off000062cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62CC 5248 bytes
SHA-256: 16788c94841be2727d8343ef2f84468df153aa68278c1fd5853965bae9a262c2
font_01_sfnt_off000074c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74C8 10180 bytes
SHA-256: 82b2bee9c9bb83d91a988a28fd8e22ea7b8312c4edc7dc0812ffecbf6fbc909b

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