Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bc845dc7421e734…

MALICIOUS

PDF

137.1 KB Created: 2020-08-05 00:19:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: abe32358ad1f292d82f1e6401a45ea7f SHA-1: 9222cb6f5b0e23c72ce5d05c3232acabb9800a55 SHA-256: 6bc845dc7421e734e07576f29a7ace8223af264a4e7d2933cec6ab3b3e0ef370
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous embedded links, many of which point to a redirector service (ttraff.cc) that is associated with malicious activity. The document body, though heavily obfuscated, contains text related to 'Traumatic brain injury definition pdf' and references the wkhtmltopdf tool, suggesting a lure to disguise the malicious intent. The presence of a link farm and redirector indicates an attempt to drive traffic to a malicious destination, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=traumatic+brain+injury+definition+pdf In PDF document text
    • http://files.achievingflight.com/uploads/1/3/1/1/131163738/b9a0a30.pdfIn PDF document text
    • http://files.unityofstockton.org/uploads/1/3/2/7/132712080/5b86e01e.pdfIn PDF document text
    • http://files.endeavourtrio.com/uploads/1/3/1/3/131384081/mudipasavigufofi.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/1/0430/2431/8618/files/nys_dmv_driver_s_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9798/0056/files/mexejiwutaluduf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9338/4599/files/sexowazom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0389/6230/files/kupelexubefivivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6560/6301/files/negerobudokut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1284/0862/files/dutaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/vodasukabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7922/8837/files/belenibebomadomawuja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6078/1465/files/5208752931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6403/3429/files/jonikulinukiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/5152/7842/files/resnick_and_halliday_physics.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
🗂 Part of campaign: achievingflight.com 3 samples

Related samples 3

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_off0001dc20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DC20 5360 bytes
SHA-256: 49b73ca3ac61c0df5e854dbdebfb13b795177ec3fc86dec57ef596f686b870bb
font_01_sfnt_off0001ee4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EE4E 12060 bytes
SHA-256: f51cf14e811a85fac20d6d785f1296d2efcc6e6eb7f05322a7f9cf6e537e5c1b

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