Malicious PDF — malware analysis report

Static analysis result for SHA-256 e302ad72d5f949d8…

MALICIOUS

PDF

43.8 KB Created: 2020-09-11 02:45:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 42d9a4f6ec052c7566a31ac06671c085 SHA-1: 2aae5a8749bb6ec9e5b2ae9ce206a6b661a085af SHA-256: e302ad72d5f949d834d1f039d2959ca642bdbb1b66e4cfc12908fd8fd4a316dd
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file exhibits characteristics of a link farm, embedding numerous external links. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'https://ttraff.link/pify?keyword=basic+hematology+questions+pdf'. Another heuristic indicates a mass external PDF link farm, with many links pointing to Shopify domains. The presence of a 'LOLBin Run Command' heuristic suggests potential execution of scripts or commands, although no specific script content was provided for analysis. The document body contains garbled text but includes the suspicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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.link/pify?keyword=basic+hematology+questions+pdf In PDF document text
    • http://files.kmmauthor.com/uploads/1/3/2/6/132682787/ba53bc803d05.pdfIn PDF document text
    • http://files.kmmauthorIn macro / runtime command snippet
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4829/6857/files/brand_awareness_social_media_and_digital_marketing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4556/0219/files/mubutifimixag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9305/6933/files/powershell_generate_random_string.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f8de3e_2b713a4371a541d494941982255d66be.pdfIn macro / runtime command snippet
    • https://static.usrfiles.com/ugd/1c90dc_fd48c838feb94154a594bc5bf3559153.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0cd019_cab656623f1844618073c0edeb2fede6.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_107871a511b54473afb38051ef128d10.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/87a178_0fbcc48fd31d444ab78eb3ce6db2e654.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0fdb6d_d8faaa540886425fbbe0568c95a85cfc.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1a89c8_e8d70eeb1fef4b968939066116cf8308.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 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_off00006be7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE7 5752 bytes
SHA-256: e895342a254ca49150a63b1d041b27ccc02d1f93c6a36a6295c36a9a1b6277c4
font_01_sfnt_off00007f64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F64 10404 bytes
SHA-256: 46fc4363f11119463915c267924ebab142429ed4f8b88544595770807f38efff

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