Malicious PDF — malware analysis report

Static analysis result for SHA-256 0240e7c865f0e535…

MALICIOUS

PDF

65.6 KB Created: 2020-08-21 18:30:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 298690283c0574968d5e7165625e2ec0 SHA-1: 54b62dab5478c6ad70a1f437b96f3d49461112e5 SHA-256: 0240e7c865f0e535cc5be14e9cb6f723f8a5c5c1fcd40fe3e264b7e47ca8eec0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links, many of which point to a redirector service. The primary redirector URL, 'https://ttraff.ru/pify?keyword=amtrak+empire+builder+schedule+pdf', is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to trick users into downloading further content. The ML classifier strongly indicates maliciousness.

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=amtrak+empire+builder+schedule+pdf In PDF document text
    • http://files.eeutah.org/uploads/1/3/1/4/131437276/serovomexepa.pdfIn PDF document text
    • http://zodan.khoueiryrealestate.com/uploads/1/3/1/0/131070420/xunesawe.pdfIn PDF document text
    • http://files.frodshammethodist.org/uploads/1/3/1/3/131381772/1924726.pdfIn PDF document text
    • http://files.misssandyssandbox.com/uploads/1/3/0/8/130874652/3021130.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/1/0434/0364/0990/files/notabukeluw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/zajowosivaxizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0402/5242/files/pathological_laughing_and_crying_scale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1368/5927/files/wararinamoloxowolaxab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6530/3455/files/ahu_commissioning_report_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8379/9459/files/browser_for_iphone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4457/7178/files/xazozisebamewabedawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3685/9813/files/xepumixupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3411/5233/files/zaverugisavonuniwimijun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2076/3804/files/rajifotipafibowebewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3705/5393/files/nopok.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_off0000b02a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB02A 5588 bytes
SHA-256: 73e8b4159a15cd30d431ec97da6f19f197dc2a2ed509faae4746d8f319b66ad5
font_01_sfnt_off0000c2f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2F1 16696 bytes
SHA-256: 69483b1b6443184a381754f11fb530d4ea73dfb4ea699e84682a7170b905fa2c

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