Malicious PDF — malware analysis report

Static analysis result for SHA-256 703d73b9b0702c48…

MALICIOUS

PDF

44.8 KB Created: 2020-08-19 10:07:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 36aff2d44d1770d82630d577c7643d9c SHA-1: aff8e4be18433c5ab4bb095702cdfcab62bc9bb3 SHA-256: 703d73b9b0702c48ddaaeb7f50ae090139311533bf82834f008ce0d2440738bc
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.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'certificate of analysis sample pdf'. The ML classifier strongly indicates maliciousness, and the presence of embedded links suggests an attempt to redirect users to potentially harmful content, likely for phishing or malware distribution.

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=certificate+of+analysis+sample+pdf In PDF document text
    • http://files.tomhumeartist.com/uploads/1/3/1/4/131453241/mujunatizovixikuxe.pdfIn PDF document text
    • http://files.bleuprinthairstudio.com/uploads/1/3/2/6/132680986/vomimabizosaxaz.pdfIn PDF document text
    • http://files.shopboutik.com/uploads/1/3/1/4/131453733/65250f322.pdfIn PDF document text
    • http://files.festoonlettering.com/uploads/1/3/0/8/130874109/zalamewi-potagikakida-pokelijata-dijawepafi.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/1/0436/0483/6515/files/action_plan_to_achieve_sales_target.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9258/9210/files/stayin_alive_bass_tab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5127/0823/files/zetutoganemire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9821/7374/files/9381934161.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0677/0849/files/zinakanini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5536/6822/files/photonics_optical_electronics_in_modern_communications.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8987/9445/files/44521571023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6088/7705/files/dujanivujapub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2562/8316/files/61248796293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2151/6445/files/advantages_and_disadvantages_of_using_social_networks_in_business.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3107/5743/files/ashab_e_kahf_in_urdu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4684/6107/files/83869292616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8359/4909/files/223980185.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_off000071da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71DA 5308 bytes
SHA-256: 76a2efcedde93d534c8283deafc371c29e33b2a39752bed3efe7f6870746e55e
font_01_sfnt_off000083d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83D1 10132 bytes
SHA-256: f7f7488c5ddcba847fe59926a52e5f02df9e31542561ac6bfdae14fa5505a5b0

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