Malicious PDF — malware analysis report

Static analysis result for SHA-256 e634bb20602ad702…

MALICIOUS

PDF

44.6 KB Created: 2020-07-29 14:42:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4ebced776767690499185205736aaf66 SHA-1: f2c65692354d4036c98b605093fa8222eff4d7be SHA-256: e634bb20602ad7021f1d3c57757f81cf4df8e253533ed911d2227bd7748f70ab
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external websites. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that at least one of these links directs to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic further suggests a deliberate attempt to create a link farm, likely for SEO manipulation or to host malicious content. The presence of these link farms and the redirection to a potentially malicious URL indicates a social engineering attack aimed at driving traffic to harmful sites.

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.ru/pify?keyword=ansys+workbench+mechanical+pdf In PDF document text
    • http://files.heritagechristianchurchsonora.com/uploads/1/3/2/6/132682125/mobusuwozot.pdfIn PDF document text
    • http://files.citystylistappuser.com/uploads/1/3/1/4/131409597/38a319028ab.pdfIn PDF document text
    • http://files.kentactingstudio.co.uk/uploads/1/3/0/9/130969298/88bc68db0f05a5b.pdfIn PDF document text
    • http://files.sippiesstudio.com/uploads/1/3/1/6/131606260/fofulunavudafesim.pdfIn PDF document text
    • http://files.ottertotsplayandlearn.com/uploads/1/3/1/4/131454272/a52f4f79547fb.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/1/0437/1100/4821/files/1350801201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/646255477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29426312843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0221/5074/files/tafiwebaragu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4386/4228/files/72110192466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5199/7592/files/tupaluwibigeboduzifus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4610/8312/files/88306150843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1294/0188/files/fafebodevogaluden.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7807/5036/files/61063951053.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0100/4707/files/davemuvotorukofijix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/vudagi.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_off00006fd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD7 5488 bytes
SHA-256: 81ac82647c456a769d153fb3b971b714913e3d72f9535e5fe51792ba8f0f9896
font_01_sfnt_off0000825a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x825A 10224 bytes
SHA-256: 0cb3b863026d6fcaaaaac7b733c1c9e1d2d8215a2c896761651a8b6e78c0de3e

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