Malicious PDF — malware analysis report

Static analysis result for SHA-256 78d334be3787d222…

MALICIOUS

PDF

43.9 KB Created: 2020-08-11 13:14:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c2a113ce0e9ed456276d364325f90e5c SHA-1: 9a64b6393962aaa4a1d19027f700f3c487701239 SHA-256: 78d334be3787d222aeec16dd03c719f5274b834be4b397a34957ca2dae3dfa3e
194 Risk Score

Malware Insights

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

The PDF contains a deceptive link disguised as a free download for a 'Zoology textbook pdf'. This link, https://ttraff.cc/pify?keyword=zoology+textbook+pdf+free+download, points to a known malicious redirector. The document also includes a large number of external PDF links, suggesting it's part of an SEO link farm designed to attract clicks. While no scripts were explicitly extracted, the PDF structure and embedded links indicate a malicious intent to redirect users to potentially harmful content.

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=zoology+textbook+pdf+free+download In PDF document text
    • http://files.marylouromneyart.com/uploads/1/3/1/1/131164097/21338090.pdfIn PDF document text
    • http://jumoxu.allthingsnewvizslas.com/uploads/1/3/1/4/131483200/pewededobajugufepo.pdfIn PDF document text
    • http://files.dignityandgrace.com/uploads/1/3/0/7/130775431/xisukujetupok.pdfIn PDF document text
    • http://files.rangakvernberg.com/uploads/1/3/1/0/131070859/6877811.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/1/0429/7133/2767/files/41083303090.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6859/7158/files/caracteristicas_de_los_alcanos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3722/1276/files/85498917952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/b2b_marketing_ebook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4697/7179/files/odt_to_jpg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7325/7116/files/administrateur_civil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2457/9736/files/skyrim_kahvozein_s_fang.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/7843304173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6405/7238/files/pelewupusutewelukazikuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/89813693006.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 4

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_off0000668d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x668D 5456 bytes
SHA-256: ee381712312b9b46703c46b53cc18e64b8da886912d793b32818f434a662d11d
font_01_sfnt_off0000794f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x794F 13068 bytes
SHA-256: 384344c9fb26b10809b563eb7b22c336d05a42ed033257e8b447262030b1f4a9

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