Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ddc596cc2d497d9…

MALICIOUS

PDF

67.7 KB Created: 2020-08-08 02:57:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fcc7b0a6723f297c2881d416f8c7cc7 SHA-1: 2766ab2034d0a59fdb7f6c051b7bb819f5d840ed SHA-256: 1ddc596cc2d497d9295152039a5ae8f62285d8d7a0513eb7c4c742f927fe2d1c
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, specifically pointing to 'https://ttraff.cc/pify?keyword=sahih+al+bukhari+pdf+arabic'. This indicates the document's primary purpose is to redirect users to potentially harmful content. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, many of which are hosted on Shopify but point to various PDF files, suggesting a tactic to manipulate search engine results or distribute content through a seemingly benign platform before leading to malicious sites.

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=sahih+al+bukhari+pdf+arabic
    • http://pomefi.collegiatestrat.com/uploads/1/3/1/0/131071157/gamimovus.pdf
    • http://files.unityofpalmyra.org/uploads/1/3/1/4/131405948/458530e4.pdf
    • http://files.upperhunterfreshmeals.com.au/uploads/1/3/1/3/131379671/fewufelujetulebu.pdf
    • http://files.nativeadvancement.net/uploads/1/3/2/3/132303117/1296410.pdf
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/16305317492.pdf
    • https://cdn.shopify.com/s/files/1/0431/2078/7613/files/body_parts_name_chart.pdf
    • https://cdn.shopify.com/s/files/1/0430/4656/8098/files/66358279692.pdf
    • https://cdn.shopify.com/s/files/1/0428/1293/2255/files/csgo_show_team_equipment.pdf
    • https://cdn.shopify.com/s/files/1/0431/2429/3796/files/lista_de_adjetivos_em_ingls.pdf
    • https://cdn.shopify.com/s/files/1/0429/5933/9679/files/76155031070.pdf
    • https://cdn.shopify.com/s/files/1/0433/7713/1683/files/8368755914.pdf
    • https://cdn.shopify.com/s/files/1/0434/8297/2326/files/zimobatudenexu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/98808863603.pdf
    • https://cdn.shopify.com/s/files/1/0437/6199/1829/files/bach_flower_remedies_book_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0434/2782/3778/files/suzugiguvebu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8624/2209/files/bimewibarawalesamobiko.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
stream_006_off0000db22.bin
cce30127844a02f7ba5ceb406ffe18f85d9000326f9838745b8e459c02b2cb33
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xDB22 22292 bytes
font_00_sfnt_off0000a495.bin
8bd5c50e498a01a02208d48078957c26eab8159aa85232fc67a3e15c017ad699
pdf-font-stream PDF embedded font (sfnt) at offset 0xA495 5372 bytes
font_01_sfnt_off0000b6cf.bin
4abba0ae2a8d6003ce299075d4b0ad5175741fa51f9101dfe34f61d645279916
pdf-font-stream PDF embedded font (sfnt) at offset 0xB6CF 10816 bytes