Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa51387cf044cca1…

MALICIOUS

PDF

41.8 KB Created: 2020-08-21 21:53:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6c039c0870293bc7c78d438a559f8a8 SHA-1: 7210768c471a318237b3955ece0c27ccaee71eaf SHA-256: fa51387cf044cca1b744119b26187e582402ce0d4c15a0697f8286eaf99c8bd6
160 Risk Score

Malware Insights

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

The PDF document contains a link farm and a malicious redirector, disguised as a search result for a 'checkbook register app for android tablet'. The primary malicious URL, 'https://ttraff.cc/pify?keyword=checkbook+register+app+for+android+tablet', is designed to redirect the user to further malicious content. The document also contains heuristics indicating a remote support lure, suggesting a potential pretext for further compromise or data theft.

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.cc/pify?keyword=checkbook+register+app+for+android+tablet
    • http://faloxewo.tarahalltravel.com/uploads/1/3/0/9/130969723/mevedejijosiji_zupazakinadek.pdf
    • http://files.babymyo.com/uploads/1/3/2/7/132710743/vevezelab-vazejo-fifodokaj.pdf
    • http://wubedova.bennettwellness.com/uploads/1/3/1/6/131606289/0971987c37f82.pdf
    • http://ripefuw.cbccroswell.org/uploads/1/3/0/8/130874085/jazifoxaka.pdf
    • http://tozewi.grannysgoatmilksoap.com/uploads/1/3/0/7/130739561/daxewis.pdf
    • https://cdn.shopify.com/s/files/1/0432/1506/1153/files/jejemowenozujixego.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/88075317933.pdf
    • https://cdn.shopify.com/s/files/1/0435/4310/1591/files/40916147033.pdf
    • https://cdn.shopify.com/s/files/1/0435/0679/4656/files/radiramesadubomowopepo.pdf
    • https://cdn.shopify.com/s/files/1/0434/9935/6324/files/wedibijufinixuxo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/15897713771.pdf
    • https://cdn.shopify.com/s/files/1/0434/2412/0984/files/basel_2_norms.pdf
    • https://cdn.shopify.com/s/files/1/0438/3241/0272/files/education._com_spanish_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0448/6434/0130/files/plutarch_on_sparta.pdf
    • https://cdn.shopify.com/s/files/1/0435/8150/5695/files/universal_vpn_app_apk.pdf
    • https://cdn.shopify.com/s/files/1/0428/6346/0508/files/business_model_canvas_file.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5684/files/58926370560.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_off000064ea.bin
245e54d177cfc840bff4f46f64035ce694b1623fbe33b9fb4cc4ec0a67959023
pdf-font-stream PDF embedded font (sfnt) at offset 0x64EA 5524 bytes
font_01_sfnt_off000077a2.bin
e19f2fc3442f372e04eee3757b0d04c882ddde942c081165d514d3591c3d6bf3
pdf-font-stream PDF embedded font (sfnt) at offset 0x77A2 10140 bytes