Malicious PDF — malware analysis report

Static analysis result for SHA-256 d01165586771daa5…

MALICIOUS

PDF

38.9 KB Created: 2020-08-19 16:04:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73721b4210f837952434bcc3ce78c4cb SHA-1: 42e1aa8bcdea2f326ca5c9fa96aa5b3ffeef7d0d SHA-256: d01165586771daa5640f0b85126282f38ae4ee2ef16df55d2fde1106e2d294f6
120 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 disguised as a helpful article about backing up WhatsApp data. This link points to `ttraff.ru`, which is flagged as malicious. The document also exhibits characteristics of a link farm, embedding numerous links, many hosted on `cdn.shopify.com`, likely to obscure the malicious destination. The primary attack vector is social engineering through a deceptive link.

Heuristics 3

  • 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.
  • 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=backup+iphone+whatsapp+to+android
    • http://tekuv.corralesconstructionllc.com/uploads/1/3/0/7/130739124/samifukewa.pdf
    • https://cdn.shopify.com/s/files/1/0438/2906/7938/files/jisarejit.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vunazazaxukatokezidabu.pdf
    • https://cdn.shopify.com/s/files/1/0430/5190/9274/files/best_networking_books_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/2026/2308/files/kabelogutilolakipew.pdf
    • https://cdn.shopify.com/s/files/1/0431/5847/0810/files/makalah_anemia_sel_sabit.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mipubafuminidumef.pdf
    • https://cdn.shopify.com/s/files/1/0435/6925/0463/files/96099106359.pdf
    • https://cdn.shopify.com/s/files/1/0433/2909/3784/files/46252424010.pdf
    • https://cdn.shopify.com/s/files/1/0433/4452/7511/files/99895401282.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_off00005b3b.bin
54d2bbae2d47e6375e1b30f80105d5036ea93d5b3cef89cd57d071a81adb6988		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B3B 5332 bytes
font_01_sfnt_off00006d5f.bin
8b46ebc0a2497dbb9abd67a669c32133bd15738692238234519181162d851e42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D5F 9928 bytes

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