Malicious PDF — malware analysis report

Static analysis result for SHA-256 cae711ac27bad5ea…

MALICIOUS

PDF

37.5 KB Created: 2020-08-19 14:17:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b1f46b89731225b0e6915ea9150d09a SHA-1: a53c585b4a2e934254b7af3747be6e824505ef46 SHA-256: cae711ac27bad5eab3b9c33cc1fdf1f39f0ee5d945c6b76b149b5b26aa629d21
160 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, 'https://ttraff.com/pify?keyword=teamviewer+portable+version', is identified as a malicious redirector. The document body and heuristics indicate a lure related to remote support tools like TeamViewer, suggesting the intent is to trick users into visiting malicious sites. No scripts were extracted, limiting the analysis of direct payload execution.

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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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.com/pify?keyword=teamviewer+portable+version
    • http://wepafa.clickfourhelp.org/uploads/1/3/1/4/131453850/214215c35de561f.pdf
    • http://sarubomek.ashlypianocrafts.com/uploads/1/3/1/1/131164250/varudukipenixu.pdf
    • http://files.songwritingcharity.org/uploads/1/3/1/4/131483955/3703809.pdf
    • http://kegufom.lindarivervalente.net/uploads/1/3/1/4/131437079/xomat-xozomujeberokup-rafideroketofug.pdf
    • http://files.spearfishspartanwrestling.com/uploads/1/3/0/7/130775892/3349353.pdf
    • https://cdn.shopify.com/s/files/1/0428/8849/5270/files/legoredenutosovafifez.pdf
    • https://cdn.shopify.com/s/files/1/0434/8697/0021/files/zifovujumoseki.pdf
    • https://cdn.shopify.com/s/files/1/0429/9853/0202/files/pdf_autoestima_automatica.pdf
    • https://cdn.shopify.com/s/files/1/0429/8778/2297/files/texamesad.pdf
    • https://cdn.shopify.com/s/files/1/0433/2562/0374/files/retinosis_pigmentaria_scielo.pdf
    • https://cdn.shopify.com/s/files/1/0440/1584/5541/files/muvejeluxarudeja.pdf
    • https://cdn.shopify.com/s/files/1/0433/9856/1959/files/beginner_s_guide_to_zero_inflated_models_with_r.pdf
    • https://cdn.shopify.com/s/files/1/0435/6423/6968/files/surogorofunefozesu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2392/4376/files/disentri_amoebiasis.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/intermediate_stories_for_reproduction_2.pdf
    • https://cdn.shopify.com/s/files/1/0431/0741/8273/files/xapejakoxukozef.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_off000054fe.bin
9406f20df034536ae696b34afe2b505bf33163a28a8f6e6b9de39eb6e2acdaa9
pdf-font-stream PDF embedded font (sfnt) at offset 0x54FE 5204 bytes
font_01_sfnt_off000066a6.bin
2633979f86948e7b1fe323522bc666dc97dfc6079d5b3e9741dd107accd53e4d
pdf-font-stream PDF embedded font (sfnt) at offset 0x66A6 10016 bytes