Malicious PDF — malware analysis report

Static analysis result for SHA-256 f09c6e1c0f7d8fac…

MALICIOUS

PDF

52.0 KB Created: 2020-08-18 22:12:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 875a8db7570163a98f275af5cec354c7 SHA-1: 9b8c57827b76e8583e1a457501d4d4305b820bdf SHA-256: f09c6e1c0f7d8fac1c4708d1dcf773b82f9594bf1d3dad2e2cafca4a9107dad9
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one specifically pointing to a known malicious redirector. This suggests the document is designed to lure users to malicious sites. The heuristic firings indicate a PDF link farm and a malicious redirector, supporting the conclusion that the primary attack pattern is link-based redirection. No scripts were extracted from this sample.

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=reforma+rural+integral+acuerdo+de+paz+resumen
    • http://files.nextlevelelite.org/uploads/1/3/0/7/130740138/7126810.pdf
    • http://files.suzannepetrizzi.com/uploads/1/3/0/8/130813645/safez.pdf
    • http://files.nicollranch.com/uploads/1/3/2/6/132682882/be4f16bf3cbea.pdf
    • http://vadom.scribeathisfeet.com/uploads/1/3/0/8/130874493/7057789.pdf
    • http://files.sand.penguinprof.com/uploads/1/3/0/8/130873918/55d79df2.pdf
    • https://cdn.shopify.com/s/files/1/0436/2846/2240/files/5542669493.pdf
    • https://cdn.shopify.com/s/files/1/0429/6559/8364/files/ashokan_farewell_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0450/5636/0600/files/61976778595.pdf
    • https://cdn.shopify.com/s/files/1/0427/4988/6620/files/nugamejofenukexufozajeg.pdf
    • https://cdn.shopify.com/s/files/1/0438/4541/9165/files/human_body_anatomy.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/metabolic_syndrome_diagnostic_criteria.pdf
    • https://cdn.shopify.com/s/files/1/0437/4488/6945/files/o_que_foi_a_cabanagem.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/laparoscopic_anatomy_of_inguinal_hernia.pdf
    • https://cdn.shopify.com/s/files/1/0434/0944/0933/files/winnie_the_pooh_ebook.pdf
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/96086775327.pdf
    • https://cdn.shopify.com/s/files/1/0429/0756/6239/files/daseruxotetigokuw.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_off00007b6c.bin
b50f2ac66934a87f5cc005cb5f9940c4e1de6820010ee21260ee41628d96a3c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6C 5416 bytes
font_01_sfnt_off00008dc9.bin
57c1a1efe77b8787baab74417af7c9afc22643a903d96c38e6370979ee04e160
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DC9 11520 bytes
font_02_sfnt_off0000b321.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xB321 4324 bytes