Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0d82c5d315bba6a…

MALICIOUS

PDF

41.0 KB Created: 2020-08-12 03:05:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 520c2a179932e89e6dfa7e4e59aa2666 SHA-1: 9f4af3bd74217519c1124384121c57a5c59ec60d SHA-256: d0d82c5d315bba6a3115ea650374bdcf23a5126a5dcacea4c7c8204adb99ac6c
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=astrometry+for+astrophysics+methods+models+and+applications+pdf'. This suggests the document is designed to lure users to malicious sites. No scripts were extracted from this sample.

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.ru/pify?keyword=astrometry+for+astrophysics+methods+models+and+applications+pdf In PDF document text
    • http://files.cosmeticsupport.com/uploads/1/3/1/4/131452982/kumewirekas.pdfIn PDF document text
    • http://wemipa.molliebing.com/uploads/1/3/2/8/132814930/gepozevaze-lipuruto-talagalefiduf.pdfIn PDF document text
    • http://files.apolloartdocent.com/uploads/1/3/1/4/131453512/8441315.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/1/0437/4976/9367/files/52390832743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/4107173541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8277/6725/files/mevirib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2611/0885/files/gefudukuwam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8731/4585/files/sword_art_online_light_novel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2480/0154/files/comite_de_basilea_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9725/0205/files/4158664777.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/sindrome_de_asperger_causas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/sokageg.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_off00006131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6131 5484 bytes
SHA-256: 5868bd9cbdf647955946685d699765e8f3fb2fca607300da6ac49197e4f71ddb
font_01_sfnt_off000073bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73BB 10228 bytes
SHA-256: c75fb3bf163b70388987aa46091763f45fb9c239502b6b2ed811121083b42859

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