Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc2f081b6aeaa130…

MALICIOUS

PDF

56.1 KB Created: 2020-08-15 17:45:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 74d152197a40210e40127ffa882aac59 SHA-1: 03d1f9ed471f58835d8615d17bcd4b0d04c51009 SHA-256: fc2f081b6aeaa130cde164c8bce746ee31285997f9d957a7ae340926b2a7f94d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a redirector URL, which is part of a link farm designed to appear as a search result for 'asoiaf books pdf download'. This suggests a social engineering tactic to trick users into downloading files from potentially untrusted sources. The presence of numerous links, many pointing to Shopify domains hosting PDF files, indicates an attempt to create a large, seemingly legitimate collection of downloadable content, likely to mask malicious activity.

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.com/wb?keyword=asoiaf%20books%20pdf%20download In PDF document text
    • http://files.hmctoronto.com/uploads/1/3/2/6/132695575/2348655.pdfIn PDF document text
    • http://nadofe.ginninderrajcc.com.au/uploads/1/3/1/8/131856979/vuzew.pdfIn PDF document text
    • http://files.utspta.org/uploads/1/3/1/6/131636852/togubixi.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/1/0431/0673/0144/files/5355376297.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3934/2247/files/oxford_discover_5_workbook_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/4625/3222/files/java_book_filetype.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8099/7269/files/zegagejoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7270/6977/files/natodejunonaludatu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4914/0902/files/rogoxaribariwifumigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3687/6695/files/tamudemamumatabogatud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/lord_of_the_rings_novels.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2068/1377/files/dasidakavaxexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2802/8312/files/cultural_anthropology_syllabus.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007dc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC9 4500 bytes
SHA-256: c7a428f373ad4661ee866c9463943f3b055bd295d58816a7cf379cebbbf83ed9
font_01_sfnt_off00008d88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D88 5224 bytes
SHA-256: ad2fdf93d752c0d026f0a3e8a9d9645b6b11cab7b643c52e20563623fb6f639f
font_02_sfnt_off00009f77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F77 11492 bytes
SHA-256: d1e3c0dd7855f222e8bfe980cdede12b8dae93cadedd4e04fedfb978ddf0186d
font_03_sfnt_off0000c5e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5E0 3364 bytes
SHA-256: 42b02428c5581f838ddfb43f2d40f30e17102d920296a56dd568daa7cebcb1f4