Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb540fa18dd91b74…

MALICIOUS

PDF

46.3 KB Created: 2020-08-12 13:11:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0054546bb6ab7e16c91f8b7b389ddd60 SHA-1: d7e25ec035c358f8367bd55183790de308ce68ab SHA-256: bb540fa18dd91b7480f0f54a7e630d04ef5948494d6f0e14647d8f5ada568251
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector (ttraff.com). The document body, though heavily obfuscated, appears to contain keywords related to textbook searches, suggesting a lure. The presence of a malicious redirector link indicates an attempt to lead the user to a harmful site, likely for further exploitation or credential harvesting.

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.com/pify?keyword=algebra+2+trig+textbook+mcdougal+littell+pdf In PDF document text
    • http://vavitu.yourchartersoffreedom.com/uploads/1/3/1/6/131636664/baneboja-kesaku-zevepuzijuj-timajumovasewop.pdfIn PDF document text
    • http://files.ruthwilkin.com/uploads/1/3/0/8/130814308/0d29c6a0f3701.pdfIn PDF document text
    • http://files.reggieschivejazzcamp.com/uploads/1/3/1/8/131856907/2f24492a3d.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/1/0434/5095/7991/files/54525698222.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9058/2427/files/95195378944.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/4412/3303/files/bilaspur_university_admit_card_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8813/3787/files/wowasixupidogetumada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8226/1415/files/87499334753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4451/1645/files/42446271737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0649/2823/files/beethoven_9th_symphony_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/69648600376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/34707652888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1731/2168/files/94290192511.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6410/6909/files/17353649993.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 5

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_off000074d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74D0 5688 bytes
SHA-256: f4272bb1708f4f64c2dc5bd7ffb70d29832d883b2a7502bf3f31049adb5f9c53
font_01_sfnt_off00008819.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8819 10680 bytes
SHA-256: 0c5201f0b6727982d7bb597a4f30c2baf5e6bffcbee2c43974a53c9432a64536

Open this report in the interactive analyzer, or submit your own file for analysis.