Malicious PDF — malware analysis report

Static analysis result for SHA-256 520d577c9eaa0268…

MALICIOUS

PDF

45.4 KB Created: 2020-08-04 03:07:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ffc4a8b66164002440035eb09495eaf5 SHA-1: b0606732a5bef8d20a9f17c0514df12af914da30 SHA-256: 520d577c9eaa0268dd6df18351d1bfa2a44158a52794f8a8e111aa8e2a5a60a4
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources, a technique often used for SEO poisoning or to host malicious content. One critical heuristic firing indicates a direct link to a known malicious redirector, 'https://ttraff.cc/pify?keyword=astm+a351+cf3m+pdf'. This suggests the document's primary purpose is to redirect the user to malicious infrastructure, likely for further exploitation or credential harvesting. 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.cc/pify?keyword=astm+a351+cf3m+pdf In PDF document text
    • http://files.portugesestonethenaturalpath.com/uploads/1/3/2/6/132682778/nubipu.pdfIn PDF document text
    • http://files.colliersdecoys.com/uploads/1/3/0/8/130814387/5312283.pdfIn PDF document text
    • http://files.elkriverdanceteam.info/uploads/1/3/1/4/131437225/pisenotogukemoduro.pdfIn PDF document text
    • http://files.problemsolvingmaps.com/uploads/1/3/0/7/130739811/meroguwegem-fafumoxi-tovuzopuneg.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/1/0440/3150/8645/files/baxizudix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3518/1734/files/typewriter_sound_effect.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2729/1544/files/40861001339.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7373/1741/files/titorolezoronaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/medade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/30371757754.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4639/6326/files/95497766496.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7295/4269/files/918280269.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9927/5935/files/99022300550.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3495/8229/files/nudojiwedusenamuxadug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8005/5965/files/58390695808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/43238000895.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_off000060d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D3 5504 bytes
SHA-256: 56d7751ad162d63a9aa75c6ef54ebada299d5020cb7d02aca244fc93586448f1
font_01_sfnt_off00007383.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7383 16668 bytes
SHA-256: 340cb7894ee6732845eca4680857f2ab0ef00033aaca27f39c880161bde5d250

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