Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fd5a3ef060a6e73…

MALICIOUS

PDF

42.5 KB Created: 2020-07-29 15:15:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 95acf94861d13d42fedf855d03638816 SHA-1: 0004fae3c459cafba7f7beb4a50133f81a12ad13 SHA-256: 3fd5a3ef060a6e73948024c2574262d7834d3be153711a3c9d7c56bd15ed0c5b
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.ru', which is associated with distributing malware. Additionally, it features a large number of external PDF links, many hosted on Shopify, suggesting a link farm for SEO poisoning or malware distribution. The document body, though heavily obfuscated, contains text related to 'Railway ticket reservation form pdf download', reinforcing the lure.

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=railway+ticket+reservation+form+pdf+download In PDF document text
    • http://files.tallywood.com/uploads/1/3/1/4/131437172/jekerexuwasagowizusa.pdfIn PDF document text
    • http://files.brightenthebrain.com/uploads/1/3/0/8/130874046/jogunodemuf.pdfIn PDF document text
    • http://files.believewithin.com/uploads/1/3/0/7/130775982/f54d354b2.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/1/0430/1458/6517/files/30510763268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1413/4692/files/3663405611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6081/3208/files/beposozirosutajif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8055/5419/files/simubexijojavipaxuvab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0428/1511/files/libivose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9413/8277/files/jezupadajexelomumeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7675/4344/files/bazajumobunidival.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1153/7053/files/lokixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7190/4673/files/gujekazirisedus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9896/4117/files/1560001858.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3804/7384/files/wopotanisiloverejigox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2329/2822/files/zewipinaw.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_off0000682b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x682B 5412 bytes
SHA-256: 6c19107b66268b1f2960b47b4375207c37a3108d36d417578aa5f994e736f49e
font_01_sfnt_off00007a94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A94 10004 bytes
SHA-256: 929d4ebb65b6a86318bbbe884c1600166a5f6d0ad7afa7811659baa20155f1a0

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