Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cf09acfc6d47a24…

MALICIOUS

PDF

42.5 KB Created: 2020-08-03 20:50:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 26eb49510b470c66b60dc32aafd6230e SHA-1: 57db0a62fbbd9a11e2d6e84d78af0fb924bd7c38 SHA-256: 2cf09acfc6d47a24b0d2bce84dcf596436c836fb0f61b0313befb619f2f6658e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=number+theory+questions+with+solutions+pdf'. This URL is presented within the document body, disguised as a link to academic material. The PDF also contains a mass external PDF link farm, with many links pointing to Shopify domains, suggesting a potential SEO poisoning or link farm tactic. The ML classifier strongly flagged this PDF as malicious.

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.cc/pify?keyword=number+theory+questions+with+solutions+pdf In PDF document text
    • http://files.younglifemanateecounty.com/uploads/1/3/1/3/131383924/1960506.pdfIn PDF document text
    • http://files.cynergy-tech.co.uk/uploads/1/3/1/4/131482950/xipevuvevusiladob.pdfIn PDF document text
    • http://files.baptistegerbier.com/uploads/1/3/2/8/132814241/zikebudok-panoka-naludosazidefe.pdfIn PDF document text
    • http://files.mollybrennan.org/uploads/1/3/0/7/130775123/9432697.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/1/0429/7896/7703/files/70543263299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/67270095446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0908/9434/files/gojutal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4185/7448/files/vezasobigimofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1440/5793/files/88938254117.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/gufiwigezujevudem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/kufusuwazoxovumuliwaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5096/6950/files/51641782504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7516/5594/files/raxamikazewisipor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7677/1224/files/policy_manual_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9037/8903/files/xixitotokifo.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_off000066ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66EC 5500 bytes
SHA-256: bdf70d6665b35e41cd47a04026ffca22a9ff780d8c897bafc43735c909a16250
font_01_sfnt_off0000798b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x798B 10232 bytes
SHA-256: c8160b1b9e796e11907291aff90c2119f6281779380f0b8af9dcbbcfdbcf6f82

Open this report in the interactive analyzer, or submit your own file for analysis.