Malicious PDF — malware analysis report

Static analysis result for SHA-256 336b9375d72dec24…

MALICIOUS

PDF

39.6 KB Created: 2020-08-02 16:13:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa26e01f979f7b56d5ee6b4394d2e405 SHA-1: 07fb1c0300830c7ef89250ac91e8ce1f83b54232 SHA-256: 336b9375d72dec248364f09ad474a20b41f916d894d3c5583e29ae5459701218
150 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=bleach+english+dubbed+torrent'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The document body, though heavily obfuscated, contains the same redirector URL and references to popular media, suggesting a lure to drive traffic to malicious infrastructure.

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=bleach+english+dubbed+torrent
    • http://files.aberdeennaturalburials.co.uk/uploads/1/3/1/4/131437513/8596150.pdf
    • http://files.bildwerkfrauenau.de/uploads/1/3/1/3/131398171/kukeruvudugobiwo.pdf
    • http://files.bobsindiansales.com/uploads/1/3/2/6/132695663/kivolul-kagitunusu.pdf
    • https://cdn.shopify.com/s/files/1/0436/6244/2646/files/botizutukubudag.pdf
    • https://cdn.shopify.com/s/files/1/0431/0538/6647/files/zexifezifa.pdf
    • https://cdn.shopify.com/s/files/1/0430/2848/0157/files/kolebukigo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/osrs_p2p_fishing_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/7188/9817/files/govawo.pdf
    • https://cdn.shopify.com/s/files/1/0435/5175/2344/files/1318983873.pdf
    • https://cdn.shopify.com/s/files/1/0427/8370/3206/files/fizapegowidew.pdf
    • https://cdn.shopify.com/s/files/1/0433/3898/9718/files/zejid.pdf
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/72171367803.pdf
    • https://cdn.shopify.com/s/files/1/0437/4275/7029/files/69719279035.pdf
    • https://cdn.shopify.com/s/files/1/0431/6119/0559/files/17817741680.pdf
    • https://cdn.shopify.com/s/files/1/0431/6063/3504/files/tesan.pdf
    • https://cdn.shopify.com/s/files/1/0431/1046/5698/files/zavexobiwuvuwalijiluxipa.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_off00004fca.bin
d4a87dbb6bc663b22a76a05764a420394bb33f4717c0836de682be161294f516
pdf-font-stream PDF embedded font (sfnt) at offset 0x4FCA 5272 bytes
font_01_sfnt_off00006197.bin
d83962e1c96ecbaec3bd54b6e67a27caa95979e50cc3c64fa61d2ba01b150842
pdf-font-stream PDF embedded font (sfnt) at offset 0x6197 9888 bytes
font_02_sfnt_off0000838a.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x838A 4324 bytes