Malicious PDF — malware analysis report

Static analysis result for SHA-256 a00c75dce5428ce3…

MALICIOUS

PDF

33.1 KB Created: 2020-08-11 14:47:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ae59ebfc0b8decef3345f742806806d6 SHA-1: 741958fb862366a044eca87770222075be3c9c64 SHA-256: a00c75dce5428ce300c5b92e5c9a7d50c1db98aebbeb9f9210179f6c6ac66b75
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This suggests the document is designed as a link farm to distribute traffic to malicious sites. The ML classifier also strongly indicated maliciousness.

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=aitsl+standards+pdf+highly+accomplished In PDF document text
    • http://files.purpleinkpublishing.com/uploads/1/3/1/4/131437844/mikofoxaxomojope.pdfIn PDF document text
    • http://files.wordoflifealaska.com/uploads/1/3/1/4/131437117/b62aa4143b.pdfIn PDF document text
    • http://tawipokub.bridgewanganui.com/uploads/1/3/1/4/131406202/bijiv.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/1/0430/3516/4835/files/remevaxadataj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0360/0283/files/jofudixawerewupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9081/8712/files/pdf_edit_multiple_pages_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2010/6404/files/xupujoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1925/5454/files/laxojebovijoxabivebiga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5354/7677/files/advance_directive_florida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7677/2250/files/nitukova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9135/9899/files/54641321628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/26980672349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4841/8971/files/35159895827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9805/4558/files/gelesekib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3844/0598/files/10110792158.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 8

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_off00004439.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4439 5660 bytes
SHA-256: 77d4ec7ccf6fbcc7f34629c67a263d6c407d38a26c02b87d6c9f3414e8c22a3c
font_01_sfnt_off00005747.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5747 9412 bytes
SHA-256: f160e606a2342c3b504cfcf9d88ceb28b46175be578b53521e63ef48688a875b

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