Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b0a8d313e2f90f0…

MALICIOUS

PDF

107.1 KB Created: 2020-08-11 07:02:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44c6d066a0a002e9906ee2a1fbafe0d3 SHA-1: e6c99ea67a73fc7df0c27631ab3be36793bb73a7 SHA-256: 3b0a8d313e2f90f01404d1af862de5ec188f0f46cee310df5a0a89ea81b922fa
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=descargar+libro+budismo+moderno+pdf'. The document body also contains this URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous external links, many pointing to Shopify domains, likely for SEO manipulation to increase visibility of the malicious link. No scripts were extracted, limiting the analysis of further payload delivery.

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=descargar+libro+budismo+moderno+pdf
    • http://files.brandonarthurshindolcsw.com/uploads/1/3/0/9/130969183/gapujekoga_kipav.pdf
    • http://files.forumarmstrade.org/uploads/1/3/0/8/130873810/ca793900d2ed3.pdf
    • http://files.cjaudiology.com/uploads/1/3/1/4/131413678/7934446.pdf
    • http://files.theutsflowerbarn.com/uploads/1/3/0/7/130776449/sirov.pdf
    • https://cdn.shopify.com/s/files/1/0435/2452/2143/files/25878339151.pdf
    • https://cdn.shopify.com/s/files/1/0438/9994/5112/files/50202802098.pdf
    • https://cdn.shopify.com/s/files/1/0430/9375/4009/files/jedenepumigijezu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4262/6984/files/7_day_back_pain_cure_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/3815/4653/files/tujosinulerizole.pdf
    • https://cdn.shopify.com/s/files/1/0437/3459/7784/files/ninjutsu_training.pdf
    • https://cdn.shopify.com/s/files/1/0434/9214/7366/files/pdf_to_editable_word_converter_online_without_email.pdf
    • https://cdn.shopify.com/s/files/1/0429/0743/5167/files/jafokam.pdf
    • https://cdn.shopify.com/s/files/1/0437/8414/3010/files/25061533702.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64255738852.pdf
    • https://cdn.shopify.com/s/files/1/0437/8935/3118/files/74144107180.pdf
    • https://cdn.shopify.com/s/files/1/0434/6249/2324/files/6433561461.pdf
    • https://cdn.shopify.com/s/files/1/0428/8980/5983/files/51387725687.pdf
    • https://cdn.shopify.com/s/files/1/0429/6871/1321/files/badatexot.pdf
    • https://cdn.shopify.com/s/files/1/0432/2174/5822/files/sewopuwolipumugutesux.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_off000163f5.bin
df2b4af9e6fde75e0b3b03f38b4f0351c22cedfa276b1527272416eaf35fdac9
pdf-font-stream PDF embedded font (sfnt) at offset 0x163F5 5612 bytes
font_01_sfnt_off000176e9.bin
992fea6da6bbeb05d287771d198aa8327a02a4775cd1d691d03cc52d8c70f578
pdf-font-stream PDF embedded font (sfnt) at offset 0x176E9 12156 bytes