Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd86e4ee9f22033b…

MALICIOUS

PDF

40.4 KB Created: 2020-08-25 05:01:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f90666b49d3a00a5828543902fddcb81 SHA-1: f61272affe1b536f9227cdfd4c1d9f5a52d36606 SHA-256: cd86e4ee9f22033bd33df745738ab2372337116ea04209f15900142e5ee5a1b9
140 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 URL, indicating a phishing or scam attempt. The primary malicious URL is https://ttraff.ru/pify?keyword=whatsapp+on+computer+without+phone, which likely leads to further malicious content. The document also contains a QR code lure, suggesting an attempt to trick users into scanning it with their phones for malicious purposes. No scripts were extracted from this sample.

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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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=whatsapp+on+computer+without+phone
    • http://files.wirelessadvocatesonline.com/uploads/1/3/1/4/131408017/6878823.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19441108854.pdf
    • https://cdn.shopify.com/s/files/1/0429/3787/6639/files/17134927763.pdf
    • https://cdn.shopify.com/s/files/1/0427/8134/3900/files/kate_the_story_of_an_hour.pdf
    • https://cdn.shopify.com/s/files/1/0441/2666/6904/files/sebigi.pdf
    • https://cdn.shopify.com/s/files/1/0429/3391/1705/files/ralomiwodibanifanar.pdf
    • https://cdn.shopify.com/s/files/1/0433/9820/1502/files/88282813188.pdf
    • https://cdn.shopify.com/s/files/1/0440/7659/7400/files/34085845109.pdf
    • https://cdn.shopify.com/s/files/1/0431/2078/7613/files/2575873389.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wuvinotagug.pdf
    • https://cdn.shopify.com/s/files/1/0430/7802/5377/files/67020807624.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_off00006091.bin
73823661e4ec92c1aa374d60a2984c8180434fb17b6fb0ffedfc10bc6d6649d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6091 5248 bytes
font_01_sfnt_off0000724b.bin
3ab680707d7b624ad3056c8b464cd2ee8bb9108fc31a9c16c3fe096f527d1cc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x724B 10032 bytes

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