Malicious PDF — malware analysis report

Static analysis result for SHA-256 d76348b4af98e6c8…

MALICIOUS

PDF

46.3 KB Created: 2020-08-08 03:27:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c719b495f2b878a1ced9e214af82f3c SHA-1: 294a0fdac090266edb2f734b288b63818ef965da SHA-256: d76348b4af98e6c817e0d06f3110e98f55897f80354ed55667073da9debcf7b0
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, with a critical heuristic firing indicating a PDF link to known malicious redirector infrastructure. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=body+dysmorphic+disorder+pdf'. The document body is heavily obfuscated but contains this URL and other links pointing to Shopify domains, suggesting a link farm or redirection scheme designed to lure users to malicious content.

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=body+dysmorphic+disorder+pdf
    • http://files.theleastoftheseministry.org/uploads/1/3/2/6/132695734/pisovani.pdf
    • http://files.annabromley.com/uploads/1/3/1/3/131380342/9f9f6a.pdf
    • http://files.anaestheticchecklists.com/uploads/1/3/1/3/131378988/9479935.pdf
    • http://files.michaelwarrenmurphy.net/uploads/1/3/1/4/131454771/7113521.pdf
    • https://cdn.shopify.com/s/files/1/0431/6345/1560/files/zutitagegidejotawirugel.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/20400548116.pdf
    • https://cdn.shopify.com/s/files/1/0435/8481/5259/files/baxubibesesa.pdf
    • https://cdn.shopify.com/s/files/1/0429/6366/5055/files/44433326065.pdf
    • https://cdn.shopify.com/s/files/1/0437/6304/0408/files/online_magazine_templates.pdf
    • https://cdn.shopify.com/s/files/1/0434/7812/2649/files/fejezezipenedawel.pdf
    • https://cdn.shopify.com/s/files/1/0435/6322/1155/files/xajunufojugikakapululijik.pdf
    • https://cdn.shopify.com/s/files/1/0434/6285/2761/files/8457477479.pdf
    • https://cdn.shopify.com/s/files/1/0439/0803/8811/files/58400428783.pdf
    • https://cdn.shopify.com/s/files/1/0428/7270/1095/files/exam_essentials_cae_practice_tests_key.pdf
    • https://cdn.shopify.com/s/files/1/0435/4863/9391/files/john_deere_parts_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/8027/7406/files/74915835008.pdf
    • https://cdn.shopify.com/s/files/1/0430/6560/6301/files/gta_5_usb_mods.pdf
    • https://cdn.shopify.com/s/files/1/0433/0140/4830/files/53394758222.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_off00006a14.bin
6a9d6e5104aa160c967333806f9f2f4ec65df74f6c945b878f0a09690a378e26
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A14 4904 bytes
font_01_sfnt_off00007ac5.bin
c8037e05e804d53f6ab9de5bcc11cb55a705e2452f7832a29cd04945d187a610
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC5 10388 bytes
font_02_sfnt_off00009e25.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E25 4324 bytes