Malicious PDF — malware analysis report

Static analysis result for SHA-256 01401ba908f07042…

MALICIOUS

PDF

55.3 KB Created: 2020-08-11 19:31:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f009aa7e5aec8818f495151659e8cfdd SHA-1: f1c91987ce6450eb3d79be63ba53a9fb605455d5 SHA-256: 01401ba908f07042f790d83435c48e271a88ee918dfc018ddbfb7d3c2261e52c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector service known for malicious activity. The document body and heuristics indicate a lure for a 'free textbook download', which is a common phishing tactic. The ML classifier strongly suggests maliciousness, and the redirector URL is a primary indicator of compromise.

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.cc/pify?keyword=grade+11+cbse+biology+textbook+pdf In PDF document text
    • http://files.loftconversionsderby.co.uk/uploads/1/3/1/8/131856039/dolijaxinivavaz-dubumonogadu-buxujogo-netuwamijukuna.pdfIn PDF document text
    • http://zilatono.nicholasperryclark.com/uploads/1/3/0/8/130874284/jejik_xawebizewemudig_gibetite_xuxototomu.pdfIn PDF document text
    • http://files.cozipawz.com/uploads/1/3/2/7/132712530/ritirumiruw.pdfIn PDF document text
    • http://files.illinoismep.com/uploads/1/3/0/7/130740490/wumipujivu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4853/4167/files/como_superar_la_ansiedad_social.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5354/7677/files/lupena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0149/4178/files/dotuzotipagasunudiruxujol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8518/5702/files/zexunimuwulewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1555/8552/files/distress_tolerance_questionnaire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1624/9767/files/todapamafuxupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9997/9930/files/lemexawekerijugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8022/8759/files/the_light_between_oceans_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5901/9933/files/43593162883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5283/4711/files/vaxivosisinabuj.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008d62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D62 5780 bytes
SHA-256: fbf24d50ae0044050a1ac45b453fdea86af2663479c53e53af3294d87ccda7d7
font_01_sfnt_off0000a139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA139 10156 bytes
SHA-256: 8130994cbb88a7a377434d731e3e586da21c9778c3d81c6ea9401acc6e89816d
font_02_sfnt_off0000c42a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC42A 3060 bytes
SHA-256: eed8c166a09d16a8216fa18e30a2b89bb0cf88ad71b7a26520e3a2b5b34f21ea

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