Malicious PDF — malware analysis report

Static analysis result for SHA-256 338b935bea955f2f…

MALICIOUS

PDF

37.2 KB Created: 2020-08-19 12:30:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aff5305dcb106cd991c8521f825c8d91 SHA-1: 4d49904dcd4760ec03d240a2465481f23086d378 SHA-256: 338b935bea955f2fc6e876386386d2ad36e7c801c33982c57548fbe25e05e5b7
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector. The document body text, though partially corrupted, includes the URL 'https://ttraff.com/pify?keyword=damian+marley+albums+free', suggesting a lure to download content. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm designed to distribute malicious content or improve SEO for malicious sites. The ML classifier also strongly flagged this PDF as malicious.

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=damian+marley+albums+free
    • http://files.usapassionpublication.com/uploads/1/3/2/7/132741348/xiwevudake_tokolumu_gavodiwabidadag_wajozipixotowud.pdf
    • http://files.lamosproductions.org/uploads/1/3/0/8/130873717/1a7b7e1baac280e.pdf
    • http://files.eoghanroche.com/uploads/1/3/0/7/130740561/4981762.pdf
    • https://cdn.shopify.com/s/files/1/0437/8614/1847/files/30391321094.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5814/files/79194308049.pdf
    • https://cdn.shopify.com/s/files/1/0434/1789/5070/files/vabovasasobamosakagebis.pdf
    • https://cdn.shopify.com/s/files/1/0433/5874/8837/files/xafefaterero.pdf
    • https://cdn.shopify.com/s/files/1/0430/3018/4098/files/6585442337.pdf
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/how_to_save_a_twitter_gif.pdf
    • https://cdn.shopify.com/s/files/1/0430/1075/2663/files/bitlocker_windows_7_professional_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/4750/8385/files/mupowaruzibeperur.pdf
    • https://cdn.shopify.com/s/files/1/0433/5039/2984/files/maxejixevenozirexoduloki.pdf
    • https://cdn.shopify.com/s/files/1/0435/7134/7619/files/1163506113.pdf
    • https://cdn.shopify.com/s/files/1/0431/8226/0384/files/oceans_hillsong_guitar_chords.pdf
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/manireko.pdf
    • https://cdn.shopify.com/s/files/1/0432/5762/6792/files/pebomikijuzerefurop.pdf
    • https://cdn.shopify.com/s/files/1/0435/9464/5672/files/47548136164.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_off000052ef.bin
35a1e64ca02da5f225c33ac854ec5ef93ea881257a73b9330a122cd0528b4469
pdf-font-stream PDF embedded font (sfnt) at offset 0x52EF 5156 bytes
font_01_sfnt_off00006462.bin
d0b27c177f9d6131098b1a6df3ac287fcdafd4d8bf586418466c0b59ee2b59a5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6462 10532 bytes