Malicious PDF — malware analysis report

Static analysis result for SHA-256 91cbde420f750ca9…

MALICIOUS

PDF

39.0 KB Created: 2020-08-14 11:46:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 74843df2b148622bcaf4e2cad3f9f8bc SHA-1: 84e20c5fbb31f8e5eb68d5d28bd299df9093a69f SHA-256: 91cbde420f750ca9dea83a7938765cfe642ce184bcf2425f776b852b4a0c165a
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=firefox+52.+3+offline'. The document body also contains this URL along with numerous other PDF links hosted on Shopify, suggesting a link farm designed to obscure the malicious destination. The primary intent appears to be directing users to the malicious redirector, likely for phishing or malware delivery.

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.cc/pify?keyword=firefox+52.+3+offline In PDF document text
    • http://vukigip.justacupowensound.com/uploads/1/3/0/8/130814297/lojuwo.pdfIn PDF document text
    • http://files.globalisationandcities.com/uploads/1/3/1/6/131607174/jilaxafufusekiw.pdfIn PDF document text
    • http://bubiz.magentawilde.com/uploads/1/3/1/4/131406390/605733325eb2afe.pdfIn PDF document text
    • http://files.ywtc.ca/uploads/1/3/1/3/131398377/6234635.pdfIn PDF document text
    • http://files.maplegrovemusicaltheatre.com/uploads/1/3/2/6/132683014/nididerubaj.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/1/0433/0687/7080/files/zozaweguxilamefawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1339/6901/files/71014397475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2401/3722/files/kamiyan_song_aslam_ali_djpunjab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mowojemabedeju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1451/9966/files/vejiwurikikikezus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9095/9766/files/tumalevem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3802/3581/files/contrapositive_geometry_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3353/4369/files/33778282864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/47027946744.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6203/4589/files/69389190912.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4958/2743/files/zojizorobopifene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2806/2109/files/69725109147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9807/9399/files/kuvegikogigudal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5419/3047/files/zedaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6145/0654/files/posunokolivakaxogigu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0D 4848 bytes
SHA-256: fa7c292c060b4bc736d1e662f50d456f556123e8bb1021525157de0090c8aef7
font_01_sfnt_off00006db4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB4 9720 bytes
SHA-256: 10a63519774fc5ab9e5bf4e090446adccc92bb7884dac5978a60b0ae9802eb64