Malicious PDF — malware analysis report

Static analysis result for SHA-256 e89736d3f35f9679…

MALICIOUS

PDF

42.1 KB Created: 2020-08-14 19:35:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7033aef32b1587b20bffe556f59ddab2 SHA-1: a6861fb42cde5de0ab460b7628ebad60581708f8 SHA-256: e89736d3f35f9679eae7e5042b62156ca3dcc83156cb7a27119320a609fc248b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. Additionally, PDF_SEO_LINK_FARM indicates the document is part of a link farm, likely to improve search engine ranking for malicious content. The primary malicious URL identified is https://ttraff.ru/pify?keyword=as+10+ppe+icai+pdf, which is likely used to redirect users to further malicious sites. The document body contains obfuscated text and embedded URLs, reinforcing the malicious intent.

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=as+10+ppe+icai+pdf
    • http://ramiwov.lerobles.com/uploads/1/3/1/4/131407405/240a3f31560f.pdf
    • https://cdn.shopify.com/s/files/1/0435/6187/7663/files/41640811937.pdf
    • https://cdn.shopify.com/s/files/1/0435/0155/1771/files/lawrence_essentials_of_general_surgery_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/3758/7606/files/63417354187.pdf
    • https://cdn.shopify.com/s/files/1/0449/5589/3928/files/20_types_of_amino_acids_and_their_structures.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/talijofazejodo.pdf
    • https://cdn.shopify.com/s/files/1/0435/2966/6724/files/spanish_to_english_translation_dictionary_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/9050/2042/files/rizutib.pdf
    • https://cdn.shopify.com/s/files/1/0432/6614/6472/files/64864427288.pdf
    • https://cdn.shopify.com/s/files/1/0436/7073/2950/files/22446804555.pdf
    • https://cdn.shopify.com/s/files/1/0427/6885/9303/files/vertical_axis_wind_turbine_design.pdf
    • https://cdn.shopify.com/s/files/1/0438/1881/1552/files/angular_ui_autocomplete.pdf
    • https://cdn.shopify.com/s/files/1/0430/8752/8103/files/simple_trainer_gta_iv.pdf
    • https://cdn.shopify.com/s/files/1/0432/8862/5302/files/foxowawozeturatizufi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0366/5822/files/kovekabemijamexo.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_off00005c36.bin
fd0e9f5c81448ac30a1be7c915c9bd37f1ae653bf179bc22ee1619b1326f8f84
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C36 4696 bytes
font_01_sfnt_off00006c30.bin
66d98c17e4a92ccb0826c40dc7e6133995070186f0b8211e4b574a6f3bd039dc
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C30 9832 bytes
font_02_sfnt_off00008dce.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DCE 4324 bytes