Malicious PDF — malware analysis report

Static analysis result for SHA-256 38c3e71a9ad6aeeb…

MALICIOUS

PDF

49.2 KB Created: 2020-08-15 08:41:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8f87987cf9ea1f9cdc1d15f08419d9a7 SHA-1: e66d0d566252d3a35a7aa96aa037a29d456b97d0 SHA-256: 38c3e71a9ad6aeeb688d61a3c7bebd0ffd433577e1731c4a399256b6cc3524b8
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to `https://ttraff.ru/pify?keyword=power+revolution+geopolitical+simulator+4+guide`. Additionally, it exhibits characteristics of an advance-fee scam lure, suggesting the user is being enticed to click the link under false pretenses of a prize or delivery. The document also hosts a large number of external PDF links, indicating a link farm, with the primary redirector being the most concerning IOC.

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=power+revolution+geopolitical+simulator+4+guide In PDF document text
    • http://files.marincoho.com/uploads/1/3/0/7/130775868/toredex.pdfIn PDF document text
    • http://files.driggssnowscapes.org/uploads/1/3/1/3/131383998/momadubep.pdfIn PDF document text
    • http://files.cybelesings.com/uploads/1/3/1/3/131397946/7760869.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/1/0433/0084/7781/files/nilelalujidiku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2262/8502/files/bopujekurad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7975/3109/files/29155662456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1997/6350/files/bajamazufeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/tinebojup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6786/6265/files/85924388427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9275/5111/files/59691665209.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0192/0157/files/vonusupikun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6820/3942/files/35341187852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8973/1479/files/33723410206.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3489/3718/files/southwest_check_in_time.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3668/0102/files/42558650373.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 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A55 5636 bytes
SHA-256: 46b5dafa65d81eafc4db7a874fdd6efa114b9077a96dc98d305ae8274af3a600
font_01_sfnt_off00007d7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D7F 10728 bytes
SHA-256: 346d8a05234328dc70e85689ed47b1d60d08f6dddbe73598b5462f06a5971d20
font_02_sfnt_off0000a25f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA25F 16060 bytes
SHA-256: 84d5bd19c210eb3b73ecc14096ab1e56fdfb5b80ce7ba4f0052c67c0c2b02727

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