Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a10921c089ac1cf…

MALICIOUS

PDF

36.2 KB Created: 2020-08-06 00:42:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e3ee7842f38099dc2b81c22bd09c1fbf SHA-1: a3957cfa04673b5d421ed8367ba4bc42f60786de SHA-256: 6a10921c089ac1cf3c2a603af80d102993de588e8a842991a68999d29bc4844c
194 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body, though heavily obfuscated, contains a reference to the same redirector URL. The presence of numerous links suggests an attempt to distribute malicious content or engage in SEO-based phishing, likely by luring users with a seemingly relevant document title like 'Ielts blank answer sheet pdf'. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/pify?keyword=ielts+blank+answer+sheet+pdf In PDF document text
    • http://files.theprestigemaids.com/uploads/1/3/1/1/131164556/2597959.pdfIn PDF document text
    • http://files.wechoosetoday.com/uploads/1/3/1/0/131070051/mewakawe_numuluwowokiwa.pdfIn PDF document text
    • http://files.bestheatingandairia.com/uploads/1/3/2/7/132740580/tafovawegat.pdfIn PDF document text
    • http://files.alignnowphysicaltherapy.com/uploads/1/3/1/6/131606461/8958658.pdfIn PDF document text
    • http://files.wulffquilts.ca/uploads/1/3/1/4/131407668/fososupusobigag.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/1/0431/9569/5266/files/45746180737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9971/6770/files/pifafam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/9238/9531/files/possessive_pronouns_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3923/4967/files/16469742711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4642/0136/files/nojowadibojumibetowuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3125/7510/files/66151595933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9445/0078/files/bemaposefumokimiboremi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5490/8071/files/supixeruwotabudarabixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4535/5682/files/falling_action_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/xakulonovumebofaxoronamox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3804/7388/files/4391345731.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 7

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_off0000492c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x492C 5360 bytes
SHA-256: 214940e12dc8b7d27acee28dc31a3a5a1a2c01098edbd98727761a2ef94e3c05
font_01_sfnt_off00005b6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B6E 14576 bytes
SHA-256: 383e71742ad5a58089b1b656dd681f921a9b10001cedc39286ce4111f6421178

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