Malicious PDF — malware analysis report

Static analysis result for SHA-256 c78e874550778ec5…

MALICIOUS

PDF

41.0 KB Created: 2020-07-31 18:53:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ec11e351639ab258fdb2b03265f81771 SHA-1: 63649954097775048b8e7c3a8666d68b9a6d1826 SHA-256: c78e874550778ec5af47ab186c3909950c33cd847ddcecd9e64d50ed43f78144
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass of external links, including a prominent link to 'ttraff.ru', which is identified as a malicious redirector. The document body, though heavily obfuscated, contains the string 'hedonism bot meme' and the malicious URL, suggesting a lure to a malicious site. The ML classifier strongly supports the malicious nature of this PDF.

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=hedonism+bot+meme In PDF document text
    • http://files.mindfulandpresent.com/uploads/1/3/1/4/131414240/ba9ec97.pdfIn PDF document text
    • http://files.prakrutischool.in/uploads/1/3/1/4/131437807/63c44ffeef93e.pdfIn PDF document text
    • http://files.massagetherapyvt.com/uploads/1/3/1/4/131406811/8f943c48e73.pdfIn PDF document text
    • http://files.fwrna.org/uploads/1/3/0/7/130739060/6493700.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/1/0434/5053/2001/files/terorudixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9045/0334/files/98180158161.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4316/8156/files/pedisinivolonejulegufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/datumaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9900/4831/files/xikimezima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4933/7500/files/gezadaselolakipu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4219/3058/files/diwobav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/7309057854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3237/0584/files/50189842439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3735/0293/files/32945192257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2725/0850/files/42418213574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5108/2143/files/57795604801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6150/1334/files/kituvupik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gojifazuxosupimuron.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_off000062a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A2 4736 bytes
SHA-256: 1bd30ec8c2f52a5c57e9a37b9ab4bea6c267d3ed297c6a5f5d4c6a2d36290abe
font_01_sfnt_off000072a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72A7 10636 bytes
SHA-256: b1899d79b2d6adab613217e07299efa49ffb27380f7c991da91913e4fa7c7f39

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