Malicious PDF — malware analysis report

Static analysis result for SHA-256 21129d0040d40aa1…

MALICIOUS

PDF

43.5 KB Created: 2020-08-20 13:09:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5c34d49eca3cba229a2b504181fbcdec SHA-1: cfb91e679b80a47e828aa71b52aa8dd1da12cc58 SHA-256: 21129d0040d40aa104bcc1867da79f554727db1dfd2d796aa594b397813c2da9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in

This PDF file was identified as malicious due to its inclusion of a large number of external links, characteristic of a link farm. One of these links, found in the document body and flagged by heuristics, redirects to 'ttraff.cc', a known malicious redirector. The document body itself contains garbled text along with the malicious URL and several benign Shopify-hosted PDF links, suggesting an attempt to disguise malicious activity within a seemingly innocuous document.

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=grenada+lake+charters+fishing+report In PDF document text
    • http://kavoz.laurahawbaker.com/uploads/1/3/1/8/131857120/14c5f0e7bb55.pdfIn PDF document text
    • http://fopoju.flowersfromsarahsgarden.com/uploads/1/3/0/7/130739892/vopemuvofe.pdfIn PDF document text
    • http://files.dceverestdanceteam.com/uploads/1/3/0/7/130739032/7681e7251d5.pdfIn PDF document text
    • http://files.omoroseblessings.com/uploads/1/3/1/8/131856446/zerifiperavoniz-firipaj.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/1/0431/5850/3590/files/93988643464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/7192/5411/files/nutritional_assessment_tools_for_nurses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3504/1693/files/achyutam_keshavam_video_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/73377329477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5341/5576/files/xazolukezu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8055/6452/files/35998679188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7366/7225/files/43241172223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5847/0810/files/49836992320.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9227/9445/files/tasks_and_duties_of_a_tour_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/32585040296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5086/8646/files/calculus_early_transcendentals_6th_edition_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0360/8231/files/4807267699.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9B 5512 bytes
SHA-256: 5e8adb3036b7fb28f2daa94e71a8d5f1d235d0a234b45be1dfac8423115e376c
font_01_sfnt_off00007d52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D52 10368 bytes
SHA-256: 7bf6032530e4c0535b5fbb3c267ba7376b94d3deae98301471a747fe3cf0fc7c

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