Malicious PDF — malware analysis report

Static analysis result for SHA-256 d65e251b3f460528…

MALICIOUS

PDF

45.6 KB Created: 2020-08-25 16:14:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 10c8e0b302b5690aedf41a26793abd1b SHA-1: d7894761a3de9ab13a58f59d80f01e3de7638d7c SHA-256: d65e251b3f4605283aacb5ddfc38b062f547491517ea5eaf8e95347dc4c7653b
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL that triggered this heuristic. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm designed to attract search engine traffic and potentially distribute further malicious content. The ML classifier also strongly indicated maliciousness.

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=win+tv+guide+launceston+tasmania In PDF document text
    • http://kiwexo.capstonechiro.com/uploads/1/3/1/3/131380213/xunadujes.pdfIn PDF document text
    • http://zipejisuk.richmondbulldogs.org/uploads/1/3/1/4/131438110/d5edfa380.pdfIn PDF document text
    • http://files.fromnaturescanvas.com/uploads/1/3/1/3/131380728/sozukizakake.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/1/0429/1769/1559/files/1918230847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2008/1563/files/fupakadokiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6240/2965/files/mercenary_prismatic_trial_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4411/8434/files/apun_ko_bhai_bolte_new_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7050/2565/files/97879505822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/50890681840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38746106010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/retizikokefabizomasis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2047/3752/files/zirojoduwomivavedumetivug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7404/4579/files/14686415204.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B0B 5236 bytes
SHA-256: fea3999ebb55dfdb11abd3f333419db7e898db90a4fc97f1c205743d9e574697
font_01_sfnt_off00007cdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CDB 14656 bytes
SHA-256: 106c6dea6cb025d58cb4d2a38ad3ab01b0a67f9c68600a7398f7605cd4985841

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