Malicious PDF — malware analysis report

Static analysis result for SHA-256 df1bb0fdc8721a02…

MALICIOUS

PDF

47.7 KB Created: 2020-08-13 04:44:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d4b78e6ae7b25d76def2f1c3d72f205 SHA-1: 6d0afbda76d57a08ed80a14db22f6e705e83c821 SHA-256: df1bb0fdc8721a02fdd91e1b5a13f7469f4daeed43fb354ccd0975bc8f326c80
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 'https://ttraff.ru/pify?keyword=the+holy+spirit+pdf+drive'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The ML classifier also strongly indicated maliciousness. The document body contains garbled text but includes the malicious URL, suggesting an attempt to disguise or obfuscate the malicious intent.

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=the+holy+spirit+pdf+drive
    • http://files.evantervetphotography.com/uploads/1/3/2/8/132814990/9544279.pdf
    • http://files.barbechamblissauthor.com/uploads/1/3/0/7/130740563/3626560.pdf
    • http://files.holisticpsychology.ca/uploads/1/3/1/8/131856283/f37e2c3d.pdf
    • https://cdn.shopify.com/s/files/1/0445/3846/2372/files/27704976726.pdf
    • https://cdn.shopify.com/s/files/1/0438/2847/8102/files/watson_glaser_critical_thinking_appraisal_test.pdf
    • https://cdn.shopify.com/s/files/1/0430/6354/1917/files/xarepima.pdf
    • https://cdn.shopify.com/s/files/1/0432/7748/4196/files/christmas_carols_guitar_chords.pdf
    • https://cdn.shopify.com/s/files/1/0432/3452/5347/files/vetuxotexajosadusuru.pdf
    • https://cdn.shopify.com/s/files/1/0432/8656/0936/files/9755557417.pdf
    • https://cdn.shopify.com/s/files/1/0430/7091/4717/files/63598789273.pdf
    • https://cdn.shopify.com/s/files/1/0430/9562/1796/files/kiwudopebow.pdf
    • https://cdn.shopify.com/s/files/1/0431/4906/6394/files/arduino_projects_book_starter_kit.pdf
    • https://cdn.shopify.com/s/files/1/0436/0539/3571/files/business_english_vocabulary_cambridge.pdf
    • https://cdn.shopify.com/s/files/1/0447/1826/0377/files/waterfall_quest_guide_osrs.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_off00006f0d.bin
7ff3960a42a8995554a2b0982fe643b5d701ff815310d65a28f3bb4ce78f0a08
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F0D 4712 bytes
font_01_sfnt_off00007f35.bin
d7a99afe00f716a012ae89ee5dcd5d8c263da1f7e958b71689c7692932af7300
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F35 10880 bytes
font_02_sfnt_off0000a3e8.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0xA3E8 4324 bytes