Malicious PDF — malware analysis report

Static analysis result for SHA-256 8843621f6b321454…

MALICIOUS

PDF

42.1 KB Created: 2020-08-12 17:33:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 49f9032b766bbb1865d020f01db1b0b7 SHA-1: 2f6873c89778140e1e33dfd486ad8efa44881718 SHA-256: 8843621f6b321454129d6b67b4d2d5d26dd0af1c8508d5866cfa69c7ef891f2f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to SEO-optimized PDF files hosted on Shopify. A critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is also present in the document body. This suggests a phishing or scam attempt using a link farm to obscure the malicious destination. 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/pify?keyword=catzos+blancos+pdf In PDF document text
    • http://files.bethanylutheranrlf.com/uploads/1/3/1/3/131381819/sizumomonogup.pdfIn PDF document text
    • http://files.carburettormagazine.com/uploads/1/3/0/9/130969190/potatagupejekiga.pdfIn PDF document text
    • http://files.paultraviscrybaby.com/uploads/1/3/1/3/131398019/7abac9156237301.pdfIn PDF document text
    • http://files.agorapublications.net/uploads/1/3/2/6/132682570/4da5af8.pdfIn PDF document text
    • http://files.eldiablo.ca/uploads/1/3/0/8/130874019/xezupuruf.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/1/0427/9923/5228/files/sipifuvexadanarologotenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8070/4405/files/64383897992.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7270/1095/files/exam_essentials_cae_practice_tests_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6918/4931/files/spelling_test_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51268900441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7302/7749/files/pudobesojewosuxivebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7571/4715/files/43880010674.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2595/4973/files/vujibofofavajilobemojus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/voxetevew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7901/5327/files/50322553598.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1657/6424/files/83059325899.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_off00006613.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6613 5148 bytes
SHA-256: 3761252f64c2ad11aca0eb79ed624d9ba5f3aa9667331e2bb3962d27710d4a4b
font_01_sfnt_off000077ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77AD 10760 bytes
SHA-256: ea3686f56ee2af90b399c78a1174a48cca8b5830c44d02d6749f0c94699554da

Open this report in the interactive analyzer, or submit your own file for analysis.