Malicious PDF — malware analysis report

Static analysis result for SHA-256 170427c5fd70b024…

MALICIOUS

PDF

38.2 KB Created: 2020-08-03 14:00:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aea3f982bd480c8b7dfa6e421254d462 SHA-1: 5fbea1ac05bf552088db0c6e69be3f17cef4fb64 SHA-256: 170427c5fd70b024882cd09c0d753a1489653c8572ca05b5078a8f09efe29644
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links to external resources, masquerading as a 'maths textbook pdf grade 12'. The primary link redirects through a known malicious SEO redirector, 'ttraff.com', indicating a phishing or scam attempt. The ML classifier strongly supports the malicious verdict, and the presence of a link farm suggests an effort to distribute malicious content.

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=maths+textbook+pdf+grade+12 In PDF document text
    • http://files.tbikesbekkevoort.be/uploads/1/3/1/6/131637679/859856.pdfIn PDF document text
    • http://files.positivefocushawaii.com/uploads/1/3/2/8/132815015/2521850.pdfIn PDF document text
    • http://files.northhamptonvfd.org/uploads/1/3/1/4/131408017/boxenatim.pdfIn PDF document text
    • http://files.carnivoradesign.com/uploads/1/3/0/9/130969440/5866389.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/1/0440/6630/8246/files/suzuki_quadrunner_250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7789/4293/files/6294052834.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8312/8214/files/suvukupisawanuvaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/yari_launcher_gungeon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9371/2286/files/11957211603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1700/2405/files/graco_pack_n_play_instruction_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8562/6520/files/91752107139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7737/8972/files/juxapezenozalazifixuwixos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0645/2127/files/68024040724.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 7

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_off000055d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55D1 5732 bytes
SHA-256: afabdb82c25ca8a38d6d94d59c1e59ac70892997afad1df3dd39e5e7092a4b99
font_01_sfnt_off00006965.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6965 10272 bytes
SHA-256: 4b9c3ec3329691b97cf76e917b6884e55ac40c47056477a9790f04be3ca3a2bb

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