Malicious PDF — malware analysis report

Static analysis result for SHA-256 81d4fb61ce5e82f1…

MALICIOUS

PDF

56.7 KB Created: 2020-07-26 11:23:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c72bef3a071790896b799595b10838ce SHA-1: 7d505c8cd877954b415a1857c387a9961bbc313d SHA-256: 81d4fb61ce5e82f1ebdd5c0c46864c675b668747895039de9eb2f00ae7319822
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious redirector, ttraff.com, with a keyword suggesting a lure related to Health Canada guidelines. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to distribute malicious content or phish users. While no scripts were directly extracted, the PDF structure and embedded links strongly suggest an attempt to lead the user to a malicious site.

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=health+canada+alcohol+consumption+guidelines In PDF document text
    • http://files.jodiehommercounseling.com/uploads/1/3/0/7/130739835/kodake_zaxim.pdfIn PDF document text
    • http://files.ottercontrol.com/uploads/1/3/1/3/131379205/7964546.pdfIn PDF document text
    • http://files.litzmusic.com/uploads/1/3/1/3/131384286/gudapov_sajelulalarola.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/1/0429/2254/1209/files/65889714017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/kodewivixovumagot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2137/7434/files/76424064168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/50306279194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2906/7938/files/6495100628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9276/2017/files/67687206325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6986/6141/files/40913497022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7850/7934/files/57242800504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1661/8145/files/wabubegutanedonofudizope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5863/3627/files/voferi.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_off00009f98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F98 5236 bytes
SHA-256: 67a9ee88145f312bd6dd86fb9a09e0a3dd607d92e119c6fb2420759d8e6bb979
font_01_sfnt_off0000b131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB131 10624 bytes
SHA-256: a77bd6709df24d7d3b0041d7e9bb71453e7bb33d591635a94559a17d82f91545

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