Malicious PDF — malware analysis report

Static analysis result for SHA-256 2de24266b0564c4a…

MALICIOUS

PDF

84.7 KB Created: 2020-08-04 09:19:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a957ca6e88842aa6eb7d1f7aa1fc68d4 SHA-1: f11884bc85b54ea163e7ada5dea6338e95442752 SHA-256: 2de24266b0564c4a3240f994e2d8da9663ae4a157f4dafdc705d7ea7681a1f9b
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=central+and+south+america+map+pdf'. Another critical heuristic indicates a PDF link farm, suggesting an attempt to manipulate search engine results or distribute content. The ML classifier strongly supports the malicious nature of the document. No scripts were extracted, but the presence of malicious links within the document body is sufficient evidence for a phishing or malware delivery attempt.

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=central+and+south+america+map+pdf
    • http://files.auntiemaileshawaiiangourmetfavorites.com/uploads/1/3/1/3/131379530/nodifutegudezobakaz.pdf
    • http://files.2wolvesinc.com/uploads/1/3/1/3/131383760/tataza.pdf
    • http://files.fmbxoriginate.co.uk/uploads/1/3/0/7/130775734/zajakewufo.pdf
    • http://files.candleliteinnludington.com/uploads/1/3/0/7/130740323/925c7ca29d7.pdf
    • http://files.lh4biz.com/uploads/1/3/1/0/131070246/bupulino.pdf
    • https://cdn.shopify.com/s/files/1/0434/0151/1068/files/96006492188.pdf
    • https://cdn.shopify.com/s/files/1/0434/3031/4133/files/roxowizabexoma.pdf
    • https://cdn.shopify.com/s/files/1/0431/6784/2455/files/play_wii_games_from_sd_card.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kenetawibonilolususede.pdf
    • https://cdn.shopify.com/s/files/1/0431/1059/6765/files/bioprocess_engineering_principles_2nd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/6859/6123/files/kedekubose.pdf
    • https://cdn.shopify.com/s/files/1/0432/2862/7099/files/popotabowodeviwebo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3470/6069/files/58391257257.pdf
    • https://cdn.shopify.com/s/files/1/0432/1126/0062/files/23727781811.pdf
    • https://cdn.shopify.com/s/files/1/0430/8657/7828/files/93820980415.pdf
    • https://cdn.shopify.com/s/files/1/0431/9005/9176/files/jupove.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_off000100df.bin
8939d3b7c8052a0a6e950042342ce347481c6fd6784c55c2f8ec24de938c142d
pdf-font-stream PDF embedded font (sfnt) at offset 0x100DF 5300 bytes
font_01_sfnt_off000112b8.bin
85e92b48ac37f381ece952b476c4e79afa046c65078c8722f30e9f2664550f8e
pdf-font-stream PDF embedded font (sfnt) at offset 0x112B8 16476 bytes