Malicious PDF — malware analysis report

Static analysis result for SHA-256 6806f9b38bd52a27…

MALICIOUS

PDF

36.9 KB Created: 2020-08-10 13:40:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: df16a124eb45fc3c5188c4bd45aeb0d1 SHA-1: 60b2f21ef389a75fff5a66f20ccd197d486e84f7 SHA-256: 6806f9b38bd52a27aaa01d8f8164609bfcae935285b5a9f1d5cd0944210a1c9b
194 Risk Score

Malware Insights

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

This PDF document contains numerous links to external PDF files, many of which are hosted on Shopify and appear to be part of an SEO link farm. The primary redirector URL, https://ttraff.com/pify?keyword=anemia+megaloblastica+epidemiologia+pdf, suggests a lure related to medical epidemiology, likely intended to drive traffic to malicious infrastructure. The ML classifier strongly flagged this PDF as malicious.

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.com/pify?keyword=anemia+megaloblastica+epidemiologia+pdf In PDF document text
    • http://files.mohamedalkhoori.com/uploads/1/3/1/0/131070618/9777421.pdfIn PDF document text
    • http://sewik.candlewyckhomes.com/uploads/1/3/0/8/130813765/2438796.pdfIn PDF document text
    • http://files.qtaxservices.com/uploads/1/3/0/7/130776100/93ad73aeec25.pdfIn PDF document text
    • http://files.girlpowerblogs.com/uploads/1/3/2/6/132681824/vavezot_xijeliz.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/1/0437/0448/3993/files/vodepolojavuzagatabifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9979/1268/files/vafepo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4844/9701/files/cfe_exam_prep_course.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0264/2075/files/96728247334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8421/0583/files/25032464023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mijafovaginidobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6277/1366/files/sedimaxufodevopaman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0486/2374/files/55465134679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/90442425312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5228/4566/files/57877979363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4103/6200/files/calculus_a_complete_course_second_edition.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 2

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_off000052a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52A8 5508 bytes
SHA-256: c99db1be850446c62eeacab51bb3a7d89364c5b19333b4ead7c564f5b9eec206
font_01_sfnt_off00006546.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6546 9756 bytes
SHA-256: 0afdae1d7e1bbf88bbb4408ba9b93d42cbc868b81cf4a8218de8598b77f1f14d

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