Malicious PDF — malware analysis report

Static analysis result for SHA-256 79a7566ca1e7cc67…

MALICIOUS

PDF

48.8 KB Created: 2020-08-07 01:09:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dcbc116b6d1af538ef98943864ac4638 SHA-1: 3a9726a7ffef20ec2f0c167d972a99aafe897ca2 SHA-256: 79a7566ca1e7cc67a33f22eebd04097d003a167ea1959dd33690f5edbc9920e5
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) that is flagged as malicious. The document body and heuristics suggest a lure for a 'free PDF download' which is a common phishing tactic. The ML classifier strongly indicates maliciousness, and the embedded links are designed to lead 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=how+to+write+a+bestselling+self+help+book+pdf In PDF document text
    • http://files.masconometdigitalphotography.com/uploads/1/3/1/4/131454024/vaxukinopajabo_wogibix_pudanifujub.pdfIn PDF document text
    • http://files.boilingfrogproductions.com/uploads/1/3/0/8/130813732/zesanivegokemut-givod-bobuwovabifa.pdfIn PDF document text
    • http://files.eastgatecbd.com/uploads/1/3/1/6/131637482/jexotoxagomo.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/1/0429/3397/7247/files/83554242289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tavolotifejenirogamofiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7164/2527/files/rirezafemojisesuvadibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2694/5947/files/business_law_today_9th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4578/1665/files/62992313217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0326/4667/files/jezefixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6246/0577/files/92383073872.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6033/6542/files/61052526547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/75728011586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7037/4559/files/wawowulefora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3292/8671/files/togajoduxabunitozedetoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9963/4326/files/teropenigugupoliduxuvuja.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 5

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_off0000804d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x804D 5560 bytes
SHA-256: e809c78864d94dcc5d2beece950c10e805ab8190733dca6800354201a5ba1823
font_01_sfnt_off00009333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9333 10240 bytes
SHA-256: dfcf898482fb58bdd504f0d92e11ccafb93f0c7441d60046e142640b0a4288a3

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