Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c4a987208188e86…

MALICIOUS

PDF

42.9 KB Created: 2020-08-21 21:01:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e02a477dcba42703d6ca5286c60c19bb SHA-1: ec242ef500f2765e15901d6ab68098fdc77c232e SHA-256: 0c4a987208188e86653039a60c878c9fc446ce3e8c5c222b9a4c57870189a0ad
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service identified as malicious. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the primary purpose is to direct users to potentially harmful content, likely for phishing or malware delivery.

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=baudrillard+simulation+and+simulacra+pdf In PDF document text
    • http://durirolu.northernmichiganlivestock.com/uploads/1/3/1/4/131407552/siwufabefa-nugomena.pdfIn PDF document text
    • http://files.hammination.com/uploads/1/3/1/0/131071137/1295226.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/1/0431/6043/6900/files/52413977192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6370/4729/files/wudirezekelekenovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2009/9488/files/air_bearing_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/dominion_virginia_power_outage_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13503036424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7294/5304/files/nadosemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7921/2962/files/manaboladinunorek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8072/6168/files/tesejojesesadovuzibeburu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0342/0570/files/pamajexupewekopefesutata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0763/0747/files/aminoacidos_esenciales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8094/1721/files/kala_movie_song_starmusiq.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2919/9005/files/adway_latest_apk_onhax.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 2

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_off00006a35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A35 5348 bytes
SHA-256: 1d1c01d9689b4954c3b14a10e1d3e5e96f940062690b71d80a228b2ca307a013
font_01_sfnt_off00007c44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C44 9940 bytes
SHA-256: a1e78bb9f7e2d6f4d6e536bf559b36e8fcd7118069670f75640ec8a9b61d961c

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