Malicious PDF — malware analysis report

Static analysis result for SHA-256 b682dbf032815f3d…

MALICIOUS

PDF

45.5 KB Created: 2020-08-15 00:00:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a20595670f7f85d66d78248d72cc266c SHA-1: 04588b934379df7757cb8c8270057e94d3800cc0 SHA-256: b682dbf032815f3d0b28a8a5b31140f9d3f8ac96dfa5a87608e7f4e947b1ad6f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document was flagged as malicious due to a high number of embedded links, many of which point to a redirector service. The document body contains text related to 'accumulating positive experiences worksheet' and the primary malicious URL is https://ttraff.cc/pify?keyword=accumulating+positive+experiences+worksheet. The heuristic PDF_SEO_LINK_FARM indicates a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. The ML classifier also strongly indicated maliciousness.

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=accumulating+positive+experiences+worksheet In PDF document text
    • http://xudupuri.iammonicaparker.com/uploads/1/3/2/3/132302942/serinepor-zomonokovosagop-fimenimaj.pdfIn PDF document text
    • http://pafufiwez.chrissyneelon.com/uploads/1/3/0/8/130814328/3863850.pdfIn PDF document text
    • http://files.eds.company/uploads/1/3/1/4/131453248/fajus_lepes.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/1/0432/7938/4736/files/jizukoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9265/4745/files/miwumivupi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1532/3291/files/wumadafubul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8575/8628/files/assistance_dentaire_formation_montreal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/55509239948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8634/8450/files/fikodutup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8566/9279/files/jesekokokuniwobaripigeji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7259/3825/files/70810598009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8437/3406/files/keguborejukoveramiviw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/95025633991.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
🗂 Part of campaign: leechristinebrownlee.com 3 samples

Related samples 3

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_off00007380.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7380 5620 bytes
SHA-256: 9c2575b2fcc586d1a47ecf260fcb9544a2b16cc4c1ccf4aab15c7f33aca941f9
font_01_sfnt_off00008687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8687 10088 bytes
SHA-256: 31f1971d35d144d36d34a20bc97f1994c6116210e46891a11696918084357419

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