Malicious PDF — malware analysis report

Static analysis result for SHA-256 5961ef43537cf68a…

MALICIOUS

PDF

43.4 KB Created: 2020-08-12 17:11:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fe6c8ec2db370e47299b964217284cc6 SHA-1: 7a588aa29ef9a57fb5320ce41b6fa48382af028d SHA-256: 5961ef43537cf68a0af0a3998a767c4876e602472573d6f97cdfdfd2ea1c1621
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/wb?keyword=1000%20conversation%20questions%20pdf%20download'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, one of which is 'https://cdn.shopify.com/s/files/1/0437/7827/7525/files/assertive_business_communication.pdf'. The document body, though heavily obfuscated, contains references to the malicious URL, suggesting an attempt to disguise malicious activity as a legitimate download lure.

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=1000%20conversation%20questions%20pdf%20download In PDF document text
    • http://files.shannonlarsen.com/uploads/1/3/2/6/132681150/7810679.pdfIn PDF document text
    • http://files.dptrackandfield.org/uploads/1/3/1/3/131398117/b31adad475303.pdfIn PDF document text
    • http://files.jeanbarrettpetphotography.com/uploads/1/3/1/3/131381681/nanep_sevixuxazem_degaluxulizot.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/1/0437/7827/7525/files/assertive_business_communication.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8031/8118/files/array_programming_questions_in_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7080/7459/files/xunifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8433/9613/files/35702411132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6872/6171/files/41623922369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4347/7909/files/70402066301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8637/9160/files/mabufijorajuledukuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9884/7896/files/74748151677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1158/6722/files/66247888020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78299439052.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8911/6836/files/botany_for_gardeners_3rd_edition_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5525/1605/files/15953784715.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 7

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_off000066d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D1 5528 bytes
SHA-256: 7550c5655a0ae0ec4424bb2f68d7429e1e41e2a6206de0f4143cb9565302bc41
font_01_sfnt_off000079ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79AD 11900 bytes
SHA-256: 464e9a63e081db69bec471612f12631b0660bd648819333f68d7751385f7db85

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