Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f9d8da49d195083…

MALICIOUS

PDF

45.9 KB Created: 2020-08-21 02:13:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9de50957818eae9473d2808149d04c0b SHA-1: 19a5ecd6bdc27094200bb1f0d7224f843085b942 SHA-256: 8f9d8da49d1950834fe7e72823578c278b03f7356286c83b958e704c8c822cc0
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. This URL is embedded within the document body, suggesting a social engineering lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy, likely to obscure the malicious destination. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=capability+statement+template+construction
    • http://files.andrewjosephcampbell.com/uploads/1/3/1/3/131398406/mosalab_tilazivawoles.pdf
    • https://cdn.shopify.com/s/files/1/0430/7841/8583/files/cholamandalam_fire_claim_form.pdf
    • https://cdn.shopify.com/s/files/1/0438/5511/8501/files/nixifirubavebisapebun.pdf
    • https://cdn.shopify.com/s/files/1/0434/6943/9141/files/tratamento_da_anemia.pdf
    • https://cdn.shopify.com/s/files/1/0429/2083/7279/files/encyclopedia_judaica_vol_1.pdf
    • https://cdn.shopify.com/s/files/1/0429/6540/1753/files/11983105156.pdf
    • https://cdn.shopify.com/s/files/1/0438/2140/0226/files/3d_shape_formulas_volume_and_surface_area.pdf
    • https://cdn.shopify.com/s/files/1/0431/5283/4711/files/45075426950.pdf
    • https://cdn.shopify.com/s/files/1/0434/1058/7800/files/85315400356.pdf
    • https://cdn.shopify.com/s/files/1/0432/8371/0117/files/91604417541.pdf
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/58553061800.pdf
    • https://cdn.shopify.com/s/files/1/0435/1960/6936/files/41688102371.pdf
    • https://cdn.shopify.com/s/files/1/0428/7981/1750/files/28588821106.pdf
    • https://cdn.shopify.com/s/files/1/0433/7670/5690/files/triangle_inequality_worksheet.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_off00007610.bin
bd527514ffa7589e078fc2a331f5664747b899c29efb7f02347278419af117ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7610 5228 bytes
font_01_sfnt_off000087bb.bin
99c9a9a6932e94e1912cbb0feea126a8540ff5f0f20f89aab2cc65743ea45d36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87BB 10144 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.