Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bdfebcf318bfa1f…

MALICIOUS

PDF

46.0 KB Created: 2020-08-21 05:53:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 94ab61e0a578c03b3f98a142983f5415 SHA-1: 0a8aa0646de93b7442942035bcbb9e0b8ef78ab3 SHA-256: 1bdfebcf318bfa1f88a1a1827c3b6c78a271f9ac34540f5a0067e9bd60c86038
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a known malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates a direct link to malicious infrastructure, and 'PDF_SEO_LINK_FARM' suggests a large number of outbound links, many hosted on Shopify. The primary malicious URL identified is https://ttraff.ru/pify?keyword=bfg+all+terrain+snow+performance. The document body is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf.

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=bfg+all+terrain+snow+performance In PDF document text
    • http://bavebup.lakecountyiltransition.com/uploads/1/3/1/4/131438539/9653562.pdfIn PDF document text
    • http://dekivapu.hartistmetals.org/uploads/1/3/0/7/130738731/fd2e94130d7f.pdfIn PDF document text
    • http://files.bonniebcollier.com/uploads/1/3/1/3/131383954/7153734.pdfIn PDF document text
    • http://files.somethingsafoote.com/uploads/1/3/2/7/132712129/wamipigonebu-nolat-doperuriganilop.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/1/0433/5098/2805/files/77718051356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5265/2951/files/anatomia_microscopica_morroni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5665/0645/files/elcometer_456_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6080/3237/files/hallelujah_trumpet_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1274/3591/files/90060644652.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7097/9238/files/53188055978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3564/0487/files/bala_bala_shaitan_ka_sala_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7179/9449/files/18254145143.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7036/5589/files/55680198547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/57787838214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8543/7853/files/icd_10_pcs_guidelines_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/7536/7065/files/rbg_color_picker.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_off000072d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72D2 5476 bytes
SHA-256: 8c8168226d457713544b2b16a83c68e744912d77e31c872261a4c1a8b2ed5a79
font_01_sfnt_off0000857b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x857B 11276 bytes
SHA-256: e45264307c74a720a31b89c1198fa7f664e8d156783e4da57d32726f754640e1

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