Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6a6fcea909117ab…

MALICIOUS

PDF

45.9 KB Created: 2020-08-09 22:28:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 091900ccf6d524f0506377eca6f193b1 SHA-1: a1eda4804a165b799a252200896a45b8723d8456 SHA-256: e6a6fcea909117ab324d36ffef194397104d8c27144749988bca9b4da66dfd9b
152 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One critical heuristic indicates that these links point to known malicious redirector infrastructure, specifically the URL https://ttraff.com/pify?keyword=calcium+rich+fruits+and+vegetables+list+pdf. The ML classifier also strongly flagged this PDF as malicious. The presence of a link farm suggests an attempt to distribute malicious content or engage in SEO poisoning to lure users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.com/pify?keyword=calcium+rich+fruits+and+vegetables+list+pdf
    • http://xesuma.annaandjade.com/uploads/1/3/1/6/131637814/d912c9d9.pdf
    • http://files.mail.musicmansion.org/uploads/1/3/0/7/130775131/18ac95ac6.pdf
    • http://fibix.chloe-bee.com/uploads/1/3/1/4/131453645/dumigogakofu_jelod_febisitas.pdf
    • http://files.accentuatescottsdale.com/uploads/1/3/0/9/130970023/6339818.pdf
    • https://cdn.shopify.com/s/files/1/0428/6801/5260/files/vepaxegadotazu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/vitafuwuji.pdf
    • https://cdn.shopify.com/s/files/1/0428/6880/1695/files/79857751391.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zosogorimojafi.pdf
    • https://cdn.shopify.com/s/files/1/0429/7303/6697/files/it_project_manager_resume.pdf
    • https://cdn.shopify.com/s/files/1/0436/5893/6473/files/irs_433_f.pdf
    • https://cdn.shopify.com/s/files/1/0432/1899/3320/files/jenidugejuluxivigutifape.pdf
    • https://cdn.shopify.com/s/files/1/0431/3936/7061/files/amando_a_pablo_odiando_a_escobar_google_drive.pdf
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/57654045476.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/gamila.pdf
    • https://cdn.shopify.com/s/files/1/0431/0610/7552/files/tibomiwodixub.pdf
    • https://cdn.shopify.com/s/files/1/0433/7539/4979/files/niduniwesepaxanirupar.pdf
    • https://cdn.shopify.com/s/files/1/0428/6509/8918/files/vajuwujewugopu.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_off000074f0.bin
45b89a454f79b87bfbd4c1eb991961b67486ca395ae5be497167f1629af0ed31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74F0 5676 bytes
font_01_sfnt_off00008817.bin
000c2ee52b5d9007bf5237a42c8f8dcda894f65f90ae364925fd8ed6ee1a83d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8817 10144 bytes

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