Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe170ca849efd9a4…

MALICIOUS

PDF

117.8 KB Created: 2020-08-01 19:13:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63b26df0679e9d78898770767e7c2f9b SHA-1: 3560ae036fe268e9682d17e04f0919e1929c5c85 SHA-256: fe170ca849efd9a49711f915c926b87f3608349b03415a4a12d9cd7438c64ffd
140 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, disguised as a 'Doro phone manual'. This is further supported by heuristics indicating a malicious redirector link and a link farm designed for SEO manipulation. The document body, though heavily obfuscated, contains the malicious URL and other benign-looking PDF links, likely to blend in. The primary intent appears to be directing users to a malicious site via a deceptive lure.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=doro+phone+manual
    • http://files.wiltshire-epc.co.uk/uploads/1/3/1/3/131379496/ab4adb8b4ad.pdf
    • http://files.smokefreeottawa.com/uploads/1/3/2/7/132712326/415019.pdf
    • http://files.cristinacaruana.com/uploads/1/3/1/0/131069886/c9642871239.pdf
    • http://files.jaimerosenstein.com/uploads/1/3/0/9/130969985/5de9df685820.pdf
    • http://files.marinasouthpiermural2015.com/uploads/1/3/2/6/132681409/modek-kusakejene-tepopar.pdf
    • https://cdn.shopify.com/s/files/1/0432/6601/5400/files/10567560091.pdf
    • https://cdn.shopify.com/s/files/1/0431/8999/3635/files/psychology_eighth_edition_david_g_myers.pdf
    • https://cdn.shopify.com/s/files/1/0429/7300/3939/files/megakurid.pdf
    • https://cdn.shopify.com/s/files/1/0437/6389/2376/files/76343293233.pdf
    • https://cdn.shopify.com/s/files/1/0428/1221/1359/files/feduxex.pdf
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/73372842874.pdf
    • https://cdn.shopify.com/s/files/1/0428/0900/0103/files/52944171999.pdf
    • https://cdn.shopify.com/s/files/1/0430/7058/7029/files/ranilixixeboliwogoje.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nepel.pdf
    • https://cdn.shopify.com/s/files/1/0433/7926/1590/files/rulodifobaregibibijos.pdf
    • https://cdn.shopify.com/s/files/1/0432/6224/7067/files/xugawefifef.pdf
    • https://cdn.shopify.com/s/files/1/0437/4138/0762/files/zepunutat.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_off00019358.bin
af7a0d8a9a6b2d011a840492212ef4c839c40923e06a66ef2c47dbecb6668ae6
pdf-font-stream PDF embedded font (sfnt) at offset 0x19358 4880 bytes
font_01_sfnt_off0001a3c5.bin
dac932c786b14af60a42fbccc471b490b4eee5602d1e798bfc68571d6ad8b451
pdf-font-stream PDF embedded font (sfnt) at offset 0x1A3C5 11232 bytes