Malicious PDF — malware analysis report

Static analysis result for SHA-256 91bac60c3eb37ac7…

MALICIOUS

PDF

32.1 KB Created: 2020-08-20 18:00:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8604fb971313d9127af631fdee570ab2 SHA-1: 8f1c597b1a1b5ceabe9f21959203964bc0c24924 SHA-256: 91bac60c3eb37ac7545f979bec4086be3028354d5d43810ca43fbdb6a4d80566
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This suggests the document is designed to lure users to malicious infrastructure, potentially for further exploitation or phishing. The presence of a link farm and a malicious redirector indicates a social engineering attack aimed at driving traffic to harmful sites.

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.ru/pify?keyword=damask+print+sheets In PDF document text
    • http://files.gaiagraphics.co.uk/uploads/1/3/1/4/131437670/c6bcc1.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/1/0435/7256/0033/files/what_are_discord_webhooks.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/52888296566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3426/4231/files/7456418717.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fulefevizurosojasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8747/0494/files/sailor_moon_manga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1334/0316/files/foliz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0846/5828/files/41631542211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/metiliwetizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5597/1492/files/71238756222.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4620/5602/files/abituriyent_4_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4738/6264/files/suxemojutiguwop.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 1

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_off00004015.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4015 5088 bytes
SHA-256: 89d8389632b0d6a1f527909959b4bf1d047a8b082f1b416c16176a41fc603cc8
font_01_sfnt_off00005140.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5140 10128 bytes
SHA-256: f47954808b556141b7ced6eb3f3e2c20e8783fb1c9b2e4ee6bc3f5e98eaafeab

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