Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b150b851c479e00…

MALICIOUS

PDF

63.7 KB Created: 2020-08-07 20:13:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4d4bc87acc8df87f77f5322487cced8 SHA-1: cdc8be6ab783534d61312d567f1470cd2bf91be1 SHA-256: 2b150b851c479e0094118fb5ac8fea27891d63cf634843d54bdb36f88276b573
194 Risk Score

Malware Insights

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

The PDF file contains multiple links, including one pointing to a known malicious redirector at 'ttraff.ru'. This redirector is likely used to obscure the final destination of the malicious payload. The document body, though heavily obfuscated, contains text related to SEO and the embedded URLs suggest a link farm strategy. The presence of a malicious redirector link and the mass linking behaviour strongly indicate a phishing or redirection attack.

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=search+engine+optimisation+techniques+pdf In PDF document text
    • http://files.southamptonisoc.org/uploads/1/3/1/4/131437306/noxunu_fesusala_mupigebugaja.pdfIn PDF document text
    • http://files.frankhagancontracting.com/uploads/1/3/2/6/132681404/zatamutofineve.pdfIn PDF document text
    • http://files.momentsbyannephotography.com/uploads/1/3/2/7/132710676/lemuforita_zavedu.pdfIn PDF document text
    • http://numalaf.hvesd.com/uploads/1/3/0/9/130969744/butewarin.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/1/0428/2915/2423/files/garukorenekez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4327/4395/files/84458547104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5298/8566/files/jidogakawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6085/3912/files/73343819452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/11450649989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/4534/2619/files/old_minecraft_texture_pack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1705/0008/files/84480663283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1504/4254/files/ziredinapiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/51084417105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99237037604.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1915/8183/files/47743238338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9613/7111/files/13533293228.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a374.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA374 5648 bytes
SHA-256: d7b19ac0648d4564df4901bb58f9072d3f898b5671f3b6c3bba78071600f1bf7
font_01_sfnt_off0000b663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB663 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off0000bef0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEF0 10612 bytes
SHA-256: 784d9215c0b276e985b4359595aab78f0ec3c87c54563ffc0acbc8e20d92ee32
font_03_sfnt_off0000e32a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE32A 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333