Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5439e139811c1a4…

MALICIOUS

PDF

41.4 KB Created: 2020-08-12 20:47:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 36e51474e9135c44222082d02df561a9 SHA-1: a736e96805a38a8c475ec0f3874c4405e9182099 SHA-256: b5439e139811c1a433fdd02abe670d9809564cb04b897d182126eb7e3ff976d5
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 pointing to Shopify domains, but the primary link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text referencing 'Bose soundsport bluetooth headphones manual' and the malicious URL, suggesting a lure to a phishing or scam site. No scripts were extracted from this sample.

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/wb?keyword=bose%20soundsport%20bluetooth%20headphones%20manual In PDF document text
    • http://files.creativemotiononline.com/uploads/1/3/1/3/131379792/waxamuwigi.pdfIn PDF document text
    • http://sageleji.majresearchgroup.com/uploads/1/3/1/4/131453501/6266dfd9.pdfIn PDF document text
    • http://files.travelsquad.net/uploads/1/3/0/8/130813921/834656.pdfIn PDF document text
    • http://files.marlboromiddleschoolpto.com/uploads/1/3/0/7/130776381/4038176.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0632/7975/files/62202783940.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4190/7110/files/32858070822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2859/4336/files/30879056143.pdfIn PDF document text
    • http://jakutig.chenderson.people.ua.edu/uploads/1/3/1/3/131383791/53a11921.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4444/6118/files/27712408927.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1407/9143/files/63437806081.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0930/9854/files/6693416911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5004/9448/files/3690988202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5106/5243/files/pipijuxoseror.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/97180758612.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005775.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5775 5220 bytes
SHA-256: abeea689730de34661612e50e8e707ffdecd6b3cc0418e216ea8ea83ef5d8bc5
font_01_sfnt_off000068f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68F1 9844 bytes
SHA-256: f000f80cb464f961de8317f6e81d9afdb1d8c5292077f4c04a3c1e156e48d6ab
font_02_sfnt_off00008a9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A9E 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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