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)
MD5: a1c7a29ef219e27178212bd3eaa69d93 SHA-1: eb203663e54eb521dc6e4c12c75122ab9c4ec4f3 SHA-256: 3ab5ec8ea763d9a90b5d6d5e0eb64b318cb7fe66ce73d3a5433dbddbb76690d8
128 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.

Heuristics 4

  • 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.
  • 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
  • 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
    • http://koragib.thetreesspeak.org/uploads/1/3/0/7/130738909/1915609.pdf
    • http://files.merraephotography.com/uploads/1/3/2/3/132303151/5036752.pdf
    • http://files.vk3sn.net/uploads/1/3/1/8/131871894/d40f274a4b81b4.pdf
    • http://nigugujod.morrisflipsenglish.com/uploads/1/3/1/4/131453870/809207.pdf
    • http://kizipiwu.cmhscheer.com/uploads/1/3/2/6/132681352/bilonewasexiretuso.pdf
    • https://cdn.shopify.com/s/files/1/0432/6014/9910/files/62547847554.pdf
    • https://cdn.shopify.com/s/files/1/0430/5348/2135/files/lukunegarukifovaxezawos.pdf
    • https://cdn.shopify.com/s/files/1/0435/7645/9422/files/vudonobumabumakibu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6569/4613/files/gudavimirasepamodupufonex.pdf
    • https://cdn.shopify.com/s/files/1/0434/0852/3416/files/atkins_phase_one_food_list.pdf
    • https://cdn.shopify.com/s/files/1/0429/0412/5599/files/84960116156.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/77636621448.pdf
    • https://cdn.shopify.com/s/files/1/0434/0006/9287/files/dineboresifemovasakika.pdf
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/kiduletopobogedepulapofid.pdf
    • https://cdn.shopify.com/s/files/1/0430/0662/3903/files/26745143288.pdf
    • https://cdn.shopify.com/s/files/1/0434/1461/8277/files/elegun_iniciao_no_candombl.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/78752777976.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009ce3.bin
6af802bf7328184355ccedd0bdac01b13fac06f92be488ce734ab7282ac9a642
pdf-font-stream PDF embedded font (sfnt) at offset 0x9CE3 5368 bytes
font_01_sfnt_off0000af1c.bin
bf27d68757d7916f7703b9e61bdfafc794bf3a7f96c3cadec8fffd3c6183cec0
pdf-font-stream PDF embedded font (sfnt) at offset 0xAF1C 14668 bytes