Malicious PDF — malware analysis report

Static analysis result for SHA-256 4de563507f6a40b6…

MALICIOUS

PDF

42.0 KB Created: 2020-08-10 07:25:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6e6180040f23373a5e0557905e515be2 SHA-1: 2d47022100a7187cd571e37c2730b8896f090064 SHA-256: 4de563507f6a40b65c2701dc64b12cb986e6dfd034655300951891df1294e474
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous links, with one critical heuristic identifying it as a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for downloading an 'MTA subway map'. This URL redirects to a known malicious domain. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content broadly.

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=mta+subway+map+pdf+download In PDF document text
    • http://files.innovadoenmexico.com/uploads/1/3/0/7/130739204/8927091.pdfIn PDF document text
    • http://files.towersports.org/uploads/1/3/1/8/131857916/497e0b.pdfIn PDF document text
    • http://files.andreafryfilms.com/uploads/1/3/1/8/131857580/a07aacb470263e.pdfIn PDF document text
    • http://files.agnieszkajaworek.com/uploads/1/3/0/7/130775115/barojuvotanuxopidafo.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/1/0430/1471/7597/files/sunevaditagufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7209/2315/files/3973722333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4842/6902/files/12604808162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/business_english_course.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5056/3734/files/fekaniwoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3997/2773/files/google_weather_icons.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7988/3170/files/rosisufodajazovirapine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2853/7753/files/fadakosojaxojigemup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9551/4535/files/homeopatia_libros_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6220/6357/files/session_horns_pro_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1165/3282/files/nabagafukalogozavase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4853/4167/files/69319221564.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 4

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_off000064d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D7 5432 bytes
SHA-256: b74d43e0da206a8e83df5510968840639048053f65146c42fce397b32e685d90
font_01_sfnt_off00007764.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7764 10636 bytes
SHA-256: d249c82aaeceb28f96d5225e2f7c3353cdbd868318d9c96de634f4ce823a01a9

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