Malicious PDF — malware analysis report

Static analysis result for SHA-256 de0c9103cd1ba28c…

MALICIOUS

PDF

41.1 KB Created: 2020-08-08 14:10:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5de2223965042fba7e85a55c0b5dfcaf SHA-1: 30a266a30840d88d5b791d1f731b12ac3de48114 SHA-256: de0c9103cd1ba28cdc5b232e419cd98ee0b551550cffbb801afef1b296dd5a25
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one specifically identified as a malicious redirector. This suggests the document's primary purpose is to direct users to potentially harmful websites. The presence of numerous other links, many pointing to Shopify domains, indicates a link farm strategy, likely for SEO manipulation or to obscure the malicious redirector. No scripts were extracted, and the document body is heavily obfuscated.

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.cc/pify?keyword=months+of+the+year+in+zulu+pdf
    • http://files.bellefitnesslifestyle.com/uploads/1/3/1/4/131410952/0652362.pdf
    • http://files.paiboon.biz/uploads/1/3/1/4/131406762/1208977.pdf
    • http://dukewi.cisband.org/uploads/1/3/2/7/132740214/sebak.pdf
    • https://cdn.shopify.com/s/files/1/0431/1898/5370/files/surah_naba_arabic_text.pdf
    • https://cdn.shopify.com/s/files/1/0439/4002/0382/files/puzidutabowokovimobovu.pdf
    • https://cdn.shopify.com/s/files/1/0432/9452/3552/files/kipuv.pdf
    • https://cdn.shopify.com/s/files/1/0437/0661/3912/files/93569092684.pdf
    • https://cdn.shopify.com/s/files/1/0435/7731/1391/files/soniziruk.pdf
    • https://cdn.shopify.com/s/files/1/0437/1211/8952/files/singer_401a_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/5639/0551/files/5342233582.pdf
    • https://cdn.shopify.com/s/files/1/0435/6902/1089/files/senotusimufoxixelo.pdf
    • https://cdn.shopify.com/s/files/1/0427/5086/9671/files/pebisafosazekapalim.pdf
    • https://cdn.shopify.com/s/files/1/0440/7921/8838/files/power_system_analysis_and_design_solution_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/2340/8032/files/39871090812.pdf
    • https://cdn.shopify.com/s/files/1/0437/7490/2430/files/28383700736.pdf
    • https://cdn.shopify.com/s/files/1/0434/4119/3110/files/jotedamemifozulifukebego.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98973723668.pdf
    • https://cdn.shopify.com/s/files/1/0431/5598/0445/files/53769717776.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053a5.bin
52a68406db1d0051d2d2ef315e4db72f1693bdff7dd16cfad3de646ec86230bb
pdf-font-stream PDF embedded font (sfnt) at offset 0x53A5 5168 bytes
font_01_sfnt_off00006541.bin
95530968d5ce3285e1c2bd1844e8174b52df59a71a5dcc0707b6e9d51d202833
pdf-font-stream PDF embedded font (sfnt) at offset 0x6541 10452 bytes
font_02_sfnt_off000088ff.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x88FF 4324 bytes