Malicious PDF — malware analysis report

Static analysis result for SHA-256 000197d8522962b3…

MALICIOUS

PDF

34.8 KB Created: 2020-08-19 00:31:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c477536869d3e331a787bafeb38939da SHA-1: 99aed007342e5eb064d711bd05e9b0edf7ec8bd2 SHA-256: 000197d8522962b300af1a3310968f7ee50532a2bb6d9e6a8eb94ccb43a70632
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL and appears to be a lure for 'A level computer science notes pdf'. This suggests a phishing or scam attempt to redirect users to malicious infrastructure. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=a+level+computer+science+notes+pdf In PDF document text
    • http://files.theshookcompany.com/uploads/1/3/1/3/131383398/5620325.pdfIn PDF document text
    • http://files.dylanness.com/uploads/1/3/0/9/130969819/860cb.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00004c97.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00004c97.bin)
    • https://cdn.shopify.com/s/files/1/0436/8554/4089/files/23732784867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6609/6806/files/94296549994.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6219/7400/files/phylum_arthropoda_clases.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9360/6046/files/58007404106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5177/8202/files/lasigaguwufetam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/muzoguganava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8494/6333/files/bullet_journal_printables_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2545/7575/files/fiwulazezegegijuzak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7209/4362/files/maximunimatibez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5746/3971/files/26400679143.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 extracted file (font_00_sfnt_off00004c97.bin)

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_off00004c97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C97 5140 bytes
SHA-256: ae4e23f33b01dd5cb0809eb03a06111f44405927633e8b2e5cd9658329b408bc
font_01_sfnt_off00005e01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E01 9532 bytes
SHA-256: ea4cd8932cde4455700974942e20cd6d81f92f338449f30658aa31b95d76f450

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