Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ef0160a734a8424…

MALICIOUS

PDF

54.7 KB Created: 2020-08-06 16:14:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 340fb5d17e2b1520d0d1975528919181 SHA-1: f0168b5b7b3a50d689d41c8cb8fe4beaa602ee1d SHA-256: 0ef0160a734a842455a78c718ea365832096f84a084f01ba6931d60995f4bbb5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to appear as legitimate documents, but they redirect to a malicious SEO link farm. The primary redirector URL is https://ttraff.ru/pify?keyword=anaerobic+digestion+process+pdf, which is flagged as malicious. The document body itself is heavily obfuscated, but the presence of many external links and the malicious redirector strongly indicate a phishing or scam 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=anaerobic+digestion+process+pdf In PDF document text
    • http://files.sculpturebylebowitz.com/uploads/1/3/1/4/131406684/gunev.pdfIn PDF document text
    • http://files.paulosibaja.com/uploads/1/3/2/6/132695525/vijunejasavisedegu.pdfIn PDF document text
    • http://files.congioia.org/uploads/1/3/1/8/131856212/6543202.pdfIn PDF document text
    • http://files.secretbutterflyboutique.com/uploads/1/3/0/7/130776828/tuzumoduponi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7362/6524/files/vopalerabasupudokifatego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7405/1493/files/boxiwakosokatovir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4829/6857/files/90893218847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1547/8176/files/bixidixinezujak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1959/2102/files/kazajex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93861148098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1755/8426/files/bach_bwv_106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3611/4076/files/13669862764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0003/7527/files/analogias_graficas_ejercicios_resueltos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/69668319206.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8745/2576/files/kulogotudirag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/pure_mathematics_2_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8660/8552/files/caballos_para_colorear.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6785/0390/files/28263389538.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2795/4853/files/31334794402.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008b3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B3F 5208 bytes
SHA-256: f2b6913e4d9ed41b568fd49881a2f81da7d97d15f196c4b984d502b47ee14905
font_01_sfnt_off00009cfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CFB 10104 bytes
SHA-256: cab9592d29c297fa24df5c89364d274b36bba04024746bddbedb1c27e2e53bba
font_02_sfnt_off0000bf84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF84 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3