Malicious PDF — malware analysis report

Static analysis result for SHA-256 d05dda62c12e3ffd…

MALICIOUS

PDF

40.9 KB Created: 2020-08-11 13:00:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b392cead59720b16d58397bf73393103 SHA-1: 1cb084899ff8f01d428643d7726a8ea48f367047 SHA-256: d05dda62c12e3ffd66ae96b011718f3dba5851ebd2e2e995e6d6bd0fefcbd466
202 Risk Score

Malware Insights

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

The PDF contains a lure related to 'invoice' or 'payment' and embeds numerous external links. One critical heuristic indicates a malicious redirector link, specifically 'https://ttraff.ru/pify?keyword=pdf+to+word+converter+free+download+for+android+phone', which is likely used to direct users to malicious content. The presence of a large number of links also suggests a link farm, potentially for SEO manipulation or distributing further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=pdf+to+word+converter+free+download+for+android+phone In PDF document text
    • http://dobika.valleytea.com.au/uploads/1/3/1/3/131383790/jurasa.pdfIn PDF document text
    • http://files.geovannadelaluz.com/uploads/1/3/0/7/130738915/5716016.pdfIn PDF document text
    • http://files.thebattleformaumauisland.com/uploads/1/3/1/3/131382346/3952946.pdfIn PDF document text
    • http://files.myrnaburksfineart.com/uploads/1/3/1/4/131406412/1826621.pdfIn PDF document text
    • http://pukizelef.robkodama.com/uploads/1/3/1/3/131379510/5a5d6ed948c3a.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/1/0432/4474/8950/files/17475691934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3723/7143/files/bofodanumofowesodaxuzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5954/3192/files/academic_performance_of_students.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9524/4441/files/16720028141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2089/4886/files/41749160394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2260/6759/files/rotimisutuwoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6780/8667/files/lusofiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/luviwibuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1403/7409/files/welatugeranajaluma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65939759823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4365/9677/files/bescherelle_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2681/6932/files/1445902687.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6243 5220 bytes
SHA-256: 68b25d174c0559723832a4b3fa728acca9e4c37253b61016efca129705ef3a17
font_01_sfnt_off00007411.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7411 10048 bytes
SHA-256: 1ffe63ab70a7134f9fb910626718744346a336339cddd01e7e335f633b3c3c25