Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b761d464e085269…

MALICIOUS

PDF

45.8 KB Created: 2020-08-07 21:05:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 82a48f645f6c7c0718ee65647ea52fdb SHA-1: c57cde624cb52d0070cf6be618cfc3614f7dcd85 SHA-256: 6b761d464e085269c7bc46a31579451c4c7ef7472409dc93f9fc99522f420af8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of embedded links, many of which point to a redirector service that is known to host malicious content. The document body itself contains a link to the same redirector, disguised as a free download for a handbook. The ML classifier strongly indicates maliciousness, and the link farm behavior suggests a phishing or scam attempt.

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=handbook+of+qualitative+data+analysis+pdf In PDF document text
    • http://jonus.deafactive.org/uploads/1/3/1/3/131398360/2614246.pdfIn PDF document text
    • http://files.johnandmargaret1607.com/uploads/1/3/2/6/132681579/xolupazaluwuzabubi.pdfIn PDF document text
    • http://files.goldbergacademy.org/uploads/1/3/0/7/130739856/wekijazalo.pdfIn PDF document text
    • http://files.riinalaineartist.com/uploads/1/3/1/4/131453588/pirum.pdfIn PDF document text
    • http://files.awaveofhealthymeals.com/uploads/1/3/0/7/130776208/zavopatafo.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/1/0429/8221/1735/files/bikoberonotizodulezokol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9946/9464/files/37716596031.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4547/7783/files/84343673326.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7342/0965/files/2733148701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6962/6781/files/mavuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6895/4526/files/nusakumelewobadadotegovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sasexenumufuxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/schedule_c_form_1040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9994/5112/files/skyrim_dual_wield_mod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lorirazapevimixawas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1714/1415/files/22669088479.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_off000075ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75AB 5392 bytes
SHA-256: 5388bcc191d4bc29a3925db0237b77bf9de526d60e2d09ed58574ab928cd636b
font_01_sfnt_off0000881e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x881E 9876 bytes
SHA-256: 9b433dd99c9045dc4d8ecc0d0f5676769a903990c742e3981e70a410d873c4ff

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