Malicious PDF — malware analysis report

Static analysis result for SHA-256 3936ddec7acfbbba…

MALICIOUS

PDF

45.4 KB Created: 2020-08-21 10:40:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0a4b60910fb95fe13c5668ce3c58fe3d SHA-1: 4d8efa3ad0cc7240e6f738334ceeb9686bebb02d SHA-256: 3936ddec7acfbbba385db8707d4e0d5ef58f5a470c8abf9b055921dd18abe758
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This suggests a link farm or SEO poisoning tactic to lure victims. The document body, though heavily obfuscated, contains the same search query as the malicious URL, reinforcing the lure. No scripts were extracted, but the PDF structure and embedded URLs are sufficient to indicate a malicious redirection attempt.

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=filemaker+pro+free++for+windows+10 In PDF document text
    • http://files.hilltaxis.co.uk/uploads/1/3/0/7/130739214/f88bc80383f.pdfIn PDF document text
    • http://files.flavaevolution.com/uploads/1/3/0/7/130739146/8422c.pdfIn PDF document text
    • http://files.gabriellapomata.com/uploads/1/3/0/8/130813511/054d4.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/1/0432/4386/4228/files/21817638896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/9182/9412/files/nogusiraguzazinezuduvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2357/8774/files/greek_alphabet_font_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1147/3571/files/isometric_to_orthographic_drawing_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0722/9597/files/52207466415.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6152/6166/files/menarolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7964/7903/files/ruzowakimenolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1949/3785/files/50959959035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/ganesh_aarti_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7496/7965/files/35237011300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4024/1829/files/amitabha_sutra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9831/6707/files/39812574943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1629/7368/files/29164160464.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_off000069db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69DB 5492 bytes
SHA-256: 02756036e904fb2f099e7704db697cf4cf2388fe914085f38e00323eaa241bf3
font_01_sfnt_off00007c87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C87 14220 bytes
SHA-256: eb127397bd1494812d4da5d1f2c46ea49c654f5e699e2c1e681cee4a9bfe28e3

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