Malicious PDF — malware analysis report

Static analysis result for SHA-256 93017801208bf0b8…

MALICIOUS

PDF

40.6 KB Created: 2020-08-14 22:03:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 005e465844e8a07e62d6d5b2cff181ff SHA-1: 930aa494b3da2dc1a65e53f3273cb8be8876d37d SHA-256: 93017801208bf0b8aaac41ba7a01064474df33215c26480b7a5455f8f6f88032
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates a PDF redirector link to 'ttraff.com', which is known malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'Android tv stick hdmi cec' and the malicious URL, suggesting a lure for potentially unwanted or malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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.com/pify?keyword=android+tv+stick+hdmi+cec
    • http://muxasibo.theaveragejose.ca/uploads/1/3/0/7/130775413/renapuladul.pdf
    • http://files.ourladyqueenofpeace.org/uploads/1/3/0/8/130814676/369a09.pdf
    • http://files.pasadenabuddhisttemple.org/uploads/1/3/0/9/130969652/524495.pdf
    • https://cdn.shopify.com/s/files/1/0434/4388/0103/files/palubigomu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9540/0349/files/jovageladix.pdf
    • https://cdn.shopify.com/s/files/1/0431/4162/8072/files/xubatitexefowulozipebub.pdf
    • https://cdn.shopify.com/s/files/1/0429/5750/4668/files/42658022809.pdf
    • https://cdn.shopify.com/s/files/1/0432/2400/6823/files/42889796716.pdf
    • https://cdn.shopify.com/s/files/1/0431/4421/6727/files/55734983020.pdf
    • https://cdn.shopify.com/s/files/1/0440/9245/7112/files/14697781762.pdf
    • https://cdn.shopify.com/s/files/1/0432/7381/4171/files/fisaja.pdf
    • https://cdn.shopify.com/s/files/1/0428/5366/2883/files/45403491763.pdf
    • https://cdn.shopify.com/s/files/1/0428/6775/3116/files/fesukotosikojejanawu.pdf
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/anlage_kind_2020_kindergeld.pdf
    • https://cdn.shopify.com/s/files/1/0434/0416/5285/files/tafopujumenes.pdf
    • https://cdn.shopify.com/s/files/1/0431/4382/3511/files/57819160973.pdf
    • https://cdn.shopify.com/s/files/1/0428/7594/5113/files/1974700560.pdf
    • https://cdn.shopify.com/s/files/1/0435/3176/3864/files/camtasia_8_user_guide.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_off000061c5.bin
5e82788a7aa43e093acc973c3e13519534bc10f1b55e2736a5007c5aa391c8dc
pdf-font-stream PDF embedded font (sfnt) at offset 0x61C5 5052 bytes
font_01_sfnt_off000072cd.bin
4864026b095da991e029298953a1a20c254a5859ac170d246967c99d0b413297
pdf-font-stream PDF embedded font (sfnt) at offset 0x72CD 10224 bytes