Malicious PDF — malware analysis report

Static analysis result for SHA-256 10aca99e663b4a93…

MALICIOUS

PDF

35.6 KB Created: 2020-08-06 15:44:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a46210695e857de2c37cb8fdf3eaf80d SHA-1: cee18f468bba6a37cfeda716661c64d448514d18 SHA-256: 10aca99e663b4a93950235aa5ca61b8c313a3af8d95ef2101cb38d47c0dc5453
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of a link farm designed to mimic legitimate content. The primary malicious link, https://ttraff.ru/pify?keyword=auditing+and+assurance+notes+pdf, is identified as a redirector to malicious infrastructure. This suggests a phishing or scam attempt using a lure of downloadable content to drive traffic 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.ru/pify?keyword=auditing+and+assurance+notes+pdf In PDF document text
    • http://files.abstractsbysabina.com/uploads/1/3/2/6/132681479/3499eb.pdfIn PDF document text
    • http://files.lizpawlak.com/uploads/1/3/1/1/131164250/3702165.pdfIn PDF document text
    • http://files.thewaveindustries.com/uploads/1/3/1/4/131413837/a1b902b2.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/1/0431/5165/5061/files/ecological_theory_by_urie_bronfenbrenner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gekisemegudifusoledo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8910/0957/files/residential_interior_design_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6450/0122/files/34298038505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85450973079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3517/1738/files/rutherford_backscattering_spectrometry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/business_plan_proposal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8275/9836/files/zuxuxijogumaxogewenizop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8421/0583/files/30734000376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75904593322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6676/1120/files/mekanisme_kerja_obat_antasida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20675343362.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_off00004d75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D75 5280 bytes
SHA-256: 9286ce5a46545bec0ef0c77ef97eea8a1e2fb72d068f64b37bfa030d2cdbff59
font_01_sfnt_off00005f7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7E 10064 bytes
SHA-256: 8bf08590a2ddc175d2d140275b36098f679133002dd99f8823cd090831853bfc

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