Malicious PDF — malware analysis report

Static analysis result for SHA-256 a401bcbd0428ab4f…

MALICIOUS

PDF

35.0 KB Created: 2020-08-14 09:39:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2daba5e91882a5b7e0c52d51b01468c8 SHA-1: 3d97077ce4da7db1a22bfccea0a67d9ccb559b51 SHA-256: a401bcbd0428ab4f6e7f6417401cab58aa518e358934b280be3a403492621743
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains, forming a link farm. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=busken+bakery+nutrition+information'. This suggests the document is part of an SEO poisoning or phishing campaign designed to lure users to malicious sites. No scripts were extracted from this sample.

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=busken+bakery+nutrition+information In PDF document text
    • http://files.alignwellnessatl.com/uploads/1/3/0/8/130813135/25f771ac8e24.pdfIn PDF document text
    • http://vawofezi.acneskincareclinic.net/uploads/1/3/1/0/131071157/waviziru.pdfIn PDF document text
    • http://soxino.hansendesign.com/uploads/1/3/0/8/130873851/011761aab.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/1/0432/2862/7107/files/80245927999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4066/7808/files/51354239737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1960/7962/files/varut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2356/3925/files/74663963929.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8819/1396/files/wowopokukerefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5144/1563/files/66932502782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2986/4343/files/91800558133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7929/5383/files/7489501842.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8055/5419/files/68819524961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8362/0757/files/fupaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0765/3526/files/26614579082.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/8833338052.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 2

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_off00004bec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BEC 5236 bytes
SHA-256: 5a328c12b2e8e6bae23191672044c85dccc99706a1fc91fb35381188bde49414
font_01_sfnt_off00005daf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DAF 9840 bytes
SHA-256: 638d31d6050d593758cf89ecab2944686390beefc9acd98318401aba7def95ab

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