Malicious PDF — malware analysis report

Static analysis result for SHA-256 b98f295b5bfdf94e…

MALICIOUS

PDF

37.2 KB Created: 2020-08-03 12:40:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 747180701eed494b481917ecafda5411 SHA-1: 7c7cf66fc8d9b9cd92f64cb8f432510bf3e79668 SHA-256: b98f295b5bfdf94ed1e790a6c2941af2b63406a039c3b2ca9db3a9df1f1d7929
194 Risk Score

Malware Insights

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

The PDF contains a link to a redirector service, which in turn points to a large number of PDFs hosted on Shopify. The primary malicious link is https://ttraff.cc/pify?keyword=keepers+of+the+kalachakra+pdf+free+download, which is presented as a free download for a book. This indicates a social engineering tactic to lure users into downloading potentially harmful content.

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=keepers+of+the+kalachakra+pdf+free+download In PDF document text
    • http://files.bigintimates.com/uploads/1/3/2/6/132695620/4807369.pdfIn PDF document text
    • http://files.peydenshelton.com/uploads/1/3/0/8/130874110/21c333.pdfIn PDF document text
    • http://files.torontotransplantinstitute.ca/uploads/1/3/1/4/131406498/jidujegapenawa.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/1/0430/5934/7618/files/53701007605.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7709/8910/files/4589301162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/10748650999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/81665890898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3854/5819/files/46184696254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/benidutibuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3290/3829/files/97261079003.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9482/7415/files/4394943820.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4933/7500/files/70074949636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4206/1986/files/52020380841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xamunodobesezuwenetubaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3751/6191/files/gabep.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 3

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_off00005420.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5420 5368 bytes
SHA-256: 53aa17d68d48ccd8b60fbab929f76dc77fc75b8e905c3520cfabac7ba5c5bb97
font_01_sfnt_off00006666.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6666 9796 bytes
SHA-256: bc3e254ace35af80f36a1b834e0a7ec9549e95c73d6fce0df5c489bc30352252

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