Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd9cbd701ab8c226…

MALICIOUS

PDF

41.2 KB Created: 2020-08-24 03:55:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f7ba175b09c3e57b2e2d0218753c183f SHA-1: 903cc848bca91617e7d4429696cfe86ac0951d3e SHA-256: cd9cbd701ab8c226bfe17cf7071e0c10137fa94f4759a715dfd38d5a87069100
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.ru/pify?keyword=tenants+union+nsw+annual+report`. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links to external PDFs, many hosted on `cdn.shopify.com`. The ML classifier also strongly indicated maliciousness. The primary attack vector appears to be social engineering via a deceptive document, leading users to potentially harmful external 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=tenants+union+nsw+annual+report In PDF document text
    • http://files.skipscards.com/uploads/1/3/0/8/130874050/f0a113.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/1/0432/8577/4502/files/17065704484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/4177/8838/files/nj_driving_test_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5427/7532/files/56975465856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3233/6792/files/bandura_self_efficacy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3900/6632/files/kexokazomog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9263/1962/files/79206465176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5594/6655/files/autocad_electrical_sample_drawings_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0408/4899/files/tojilovu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E0F 4856 bytes
SHA-256: 035e012d01a659944bd15d6b6c37238fae433b99e85cbe4f9952cb2930bd16b1
font_01_sfnt_off00005eb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB3 10536 bytes
SHA-256: 7483cfa4d9daaee18e2c472664d5c5db60710b338cefd3e9ddf89f1f72bf6c59
font_02_sfnt_off000082f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82F9 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd

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