Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f6007e38666ff53…

MALICIOUS

PDF

45.1 KB Created: 2020-07-30 23:24:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 97fe4f290093a45f9f7a5e1d4e25db68 SHA-1: 1e44af702217d72f42e1bcd1acf6b24fd98a3c5d SHA-256: 4f6007e38666ff537be29325cc88a3ae4bf3366b8ebebe89d339fd4189411446
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, suggests a lure related to 'Jeppesen aviation weather pdf'. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=jeppesen+aviation+weather+pdf In PDF document text
    • http://files.tracyspadafora.com/uploads/1/3/2/8/132815828/c11f4c.pdfIn PDF document text
    • http://files.bertsheffieldparaequestrianrider.com/uploads/1/3/0/8/130873781/pegonadotitinup_konoxi_xusim.pdfIn PDF document text
    • http://files.sampsongigharbortherapy.com/uploads/1/3/1/6/131637257/9f3a166e32297aa.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/1/0431/7921/2959/files/xepufilumoruzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78046530146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5939/6254/files/muxobuvituxafupukis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0601/7186/files/kapawejekilewineze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6419/6256/files/77516940047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3415/5928/files/77365019910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/puwalopozaveditowasiwuwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6642/3456/files/tizerupugatuxexupogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4170/8453/files/jedefudasisigujemipuzamot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1991/0820/files/75390847041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5654/5433/files/81902679179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1765/6728/files/68241819498.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 4

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_off000072fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72FD 5024 bytes
SHA-256: 275b602f3596e10179e90dbd33a6a25322572f6d3409b84a3fe5731a6f530afd
font_01_sfnt_off00008414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8414 10428 bytes
SHA-256: cf76a5bdc74c31d653bfa9d05875b4f330e206cdf70f3a6def031cc7fef0335a

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