Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f6efc6a0567ad5a…

MALICIOUS

PDF

113.8 KB Created: 2020-07-29 01:41:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 75cb007320c50ac3a1a9be97b9da5ef8 SHA-1: 5034f920dafffe7d69d6267cb7570824855b01b4 SHA-256: 5f6efc6a0567ad5a1a970d73c91edf70a7c770674e53da9344295f0b95d1389e
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as free game downloads, but they redirect to a malicious infrastructure identified by the 'ttraff.ru' domain. This indicates a phishing or scam attempt, likely using a spearphishing attachment vector. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=free+rpg+games+for+pc+no In PDF document text
    • http://files.lizromanek.com/uploads/1/3/0/8/130813782/1808551.pdfIn PDF document text
    • http://files.rounduprealtyandbrokerage.com/uploads/1/3/1/4/131452861/6bec61f00d8b.pdfIn PDF document text
    • http://files.beaconcoachingandtraining.com/uploads/1/3/0/9/130969424/lepeba.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/1/0433/0687/7080/files/bixebor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0216/6435/files/wijadisigukegevini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8131/0114/files/waluxokikixuwakujiwivika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7680/5013/files/vapogasib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/92059613787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4288/2215/files/mipuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4994/2176/files/13674197914.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4031/6311/files/parotimidivalutuvige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9832/5663/files/86945725763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9018/2297/files/7578542843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6073/1808/files/70866606495.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015c68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C68 3568 bytes
SHA-256: 27d5054226f5969e05e004a437dd878770dfa75a04464709b4f17fd0a953141e
font_01_sfnt_off0001691f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1691F 4920 bytes
SHA-256: 68e129c08def023f8257a5d09e3ed04817907f47bd0349b0b11d19e1c32bf223
font_02_sfnt_off000179b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x179B6 10736 bytes
SHA-256: 4a0517385b7026b07a010b72927546c55cb87d6dfacebac1f2dce85de49ebda8
font_03_sfnt_off00019e28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19E28 17116 bytes
SHA-256: e1a62eaa7fd113b68df0b8d830b775b0d219ebdb1f7cd72f95e2b69aeb80dabb

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