Malicious PDF — malware analysis report

Static analysis result for SHA-256 641117df2b52a540…

MALICIOUS

PDF

54.6 KB Created: 2020-08-10 10:58:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 97f14cea739a1fef5da1090136eca74b SHA-1: c8bdda263c5fc66bc27b9f04845859801a047df7 SHA-256: 641117df2b52a5407bbdf94e64c83ee903507846079f1e91d67b133b5c9b10e2
194 Risk Score

Malware Insights

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

This PDF file contains a link that redirects to a malicious URL, identified as a redirector for SEO phishing. The document body, though heavily obfuscated, contains the text 'Amtrak schedules pdf' and the malicious URL, suggesting a lure to trick users into downloading potentially harmful 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+schedules+pdf In PDF document text
    • http://files.lvsports.org/uploads/1/3/1/4/131438439/foxaroj_vijopi.pdfIn PDF document text
    • http://files.mybodyofknowledge.net/uploads/1/3/1/3/131398251/8929755.pdfIn PDF document text
    • http://files.ronnieroseband.com/uploads/1/3/0/8/130813797/a7f99.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/1/0434/5937/9357/files/valores_actitudes_y_satisfaccion_laboral.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1139/0115/files/8435329237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2353/2195/files/gezovuwuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/kuderosijopaxadaves.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5704/5916/files/fogafuxemebenesez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7686/8510/files/42281989986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4965/4184/files/zizigonesevirerijebuleku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0011/7928/files/kakejumole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0056/9751/files/6909643374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/62384267255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3692/6374/files/archies_manchester_menu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5625/1559/files/16884146312.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_off00009618.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9618 5448 bytes
SHA-256: 4b3dc61cff372d24f36b70a918aae47b088b2905badef793848531410341ae6c
font_01_sfnt_off0000a878.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA878 10772 bytes
SHA-256: 2cce917d4648ad0f317877a056a9f09e5bd77d9a685028d04e37423f61a3d401

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