Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ab5ec8ea763d9a9…

MALICIOUS

PDF

58.5 KB Created: 2020-08-12 00:27:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a1c7a29ef219e27178212bd3eaa69d93 SHA-1: eb203663e54eb521dc6e4c12c75122ab9c4ec4f3 SHA-256: 3ab5ec8ea763d9a90b5d6d5e0eb64b318cb7fe66ce73d3a5433dbddbb76690d8
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link that leads to ttraff.ru, which is flagged as malicious. The document also contains heuristics indicating it's a lure for invoices or payments, and it includes a large number of external PDF links, many hosted on Shopify. The primary attack vector appears to be social engineering via a deceptive link within the PDF.

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=center+parcs+bostalsee+lageplan+pdf In PDF document text
    • http://koragib.thetreesspeak.org/uploads/1/3/0/7/130738909/1915609.pdfIn PDF document text
    • http://files.merraephotography.com/uploads/1/3/2/3/132303151/5036752.pdfIn PDF document text
    • http://files.vk3sn.net/uploads/1/3/1/8/131871894/d40f274a4b81b4.pdfIn PDF document text
    • http://nigugujod.morrisflipsenglish.com/uploads/1/3/1/4/131453870/809207.pdfIn PDF document text
    • http://kizipiwu.cmhscheer.com/uploads/1/3/2/6/132681352/bilonewasexiretuso.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/1/0432/6014/9910/files/62547847554.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5348/2135/files/lukunegarukifovaxezawos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7645/9422/files/vudonobumabumakibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6569/4613/files/gudavimirasepamodupufonex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0852/3416/files/atkins_phase_one_food_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0412/5599/files/84960116156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/77636621448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0006/9287/files/dineboresifemovasakika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/kiduletopobogedepulapofid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0662/3903/files/26745143288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1461/8277/files/elegun_iniciao_no_candombl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/78752777976.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_off00009ce3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CE3 5368 bytes
SHA-256: 6af802bf7328184355ccedd0bdac01b13fac06f92be488ce734ab7282ac9a642
font_01_sfnt_off0000af1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF1C 14668 bytes
SHA-256: bf27d68757d7916f7703b9e61bdfafc794bf3a7f96c3cadec8fffd3c6183cec0