Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdff05de65b9ee39…

MALICIOUS

PDF

56.5 KB Created: 2020-08-14 14:54:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 606fbd9989d6be440dc1a3ea01ea1315 SHA-1: 0d47c8f411887ad2b28ebb4a67641348ecff52bc SHA-256: bdff05de65b9ee39c9394454ce4124d0839f75ac67fda0b23cdc2ffbcb0711e9
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.ru/pify?keyword=alferez+real+libro+pdf`. It also exhibits characteristics of a PDF link farm, embedding numerous external links, many of which point to benign Shopify domains but are likely used to obscure the malicious redirector. The document body, though heavily obfuscated, contains the malicious URL and several other URLs, suggesting a lure to download further content or initiate a phishing attempt.

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=alferez+real+libro+pdf
    • http://ruzuja.bellinghamdisciples.org/uploads/1/3/0/8/130814297/1c0a00b.pdf
    • http://gipavufix.lexpcc.org/uploads/1/3/0/8/130874038/31c7ea.pdf
    • http://files.janansiam.com/uploads/1/3/0/7/130739069/ritugixiduwev-xitoxid-pipatasituxur-bivaviw.pdf
    • https://cdn.shopify.com/s/files/1/0429/7375/7603/files/22932966948.pdf
    • https://cdn.shopify.com/s/files/1/0431/6450/0122/files/16091437146.pdf
    • https://cdn.shopify.com/s/files/1/0430/6137/9226/files/62112316289.pdf
    • https://cdn.shopify.com/s/files/1/0432/0264/2075/files/jasper_reports_tutorial_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0434/7628/7648/files/73486947154.pdf
    • https://cdn.shopify.com/s/files/1/0430/4044/0471/files/good_discord_role_colors.pdf
    • https://cdn.shopify.com/s/files/1/0444/0922/5382/files/apc_ups_600va.pdf
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/29814287707.pdf
    • https://cdn.shopify.com/s/files/1/0435/2340/8023/files/48584033478.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_off0000a1d1.bin
ab1d2bea01c8491692b27e1a1444acdedf0f4ca798bbc3c7ed750a09915d9efe		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1D1 5036 bytes
font_01_sfnt_off0000b304.bin
28605f24bf0084f52c47957c9fef4cd900c0867abbece75b1ebb439554a6c40c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB304 10192 bytes

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