Malicious PDF — malware analysis report

Static analysis result for SHA-256 309ce6886f4d150a…

MALICIOUS

PDF

47.2 KB Created: 2020-08-24 19:45:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9ce5ee43729c7f463d66a5d2190663b8 SHA-1: 784be1b92fdb724288f8f2e3d6c41d5c3bf6bc88 SHA-256: 309ce6886f4d150abc2460e96ac917490f602b66e6ba7ed3f45b8b68596d29a7
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'welding blueprint reading worksheets' and the malicious URL, suggesting a lure to disguise the malicious intent. The ML classifier strongly supports the malicious verdict.

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=welding+blueprint+reading+worksheets In PDF document text
    • http://files.davidebonazzi.com/uploads/1/3/0/7/130776324/196276.pdfIn PDF document text
    • http://files.huesoproductions.com/uploads/1/3/0/8/130873902/1326642.pdfIn PDF document text
    • http://jiponif.tulsalines.com/uploads/1/3/0/8/130814933/d2b127250.pdfIn PDF document text
    • http://sasufo.helpurchild.net/uploads/1/3/1/6/131606271/gufoxufu_romugiv_tizitazejodup_fokoxaso.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/1/0434/4116/0344/files/li_ion_vs_li_polymer_battery_performance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3122/2677/files/2007_ninja_250r_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/78245452930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4160/3239/files/dynamics_of_machinery_formula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6083/6005/files/dupezugoluxotuvuwiferi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/8625/8852/files/acog_guidelines_for_breast_cancer_screening.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2951/1835/files/funot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5109/8007/files/xagozosigilegoremi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5936/3488/files/84329032041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0830/8886/files/ret_pally_talents.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/51176422235.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70B1 5528 bytes
SHA-256: dff502ca9526148d671ccc7e408563910dbbb2ad22837e93bf84c67e62822f83
font_01_sfnt_off0000837b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x837B 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off00008c08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C08 10428 bytes
SHA-256: 23050afd199918d60328d5649ccb9a44239b9d91e44271450806e1a088a15fd1

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