Malicious PDF — malware analysis report

Static analysis result for SHA-256 d23e100de5cd4582…

MALICIOUS

PDF

44.4 KB Created: 2020-08-02 12:43:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98d67ac200ca257863a6d082b2f41e0a SHA-1: c3e794d14f80044999635f93bbb0af152d9e3f1b SHA-256: d23e100de5cd4582f6c78a6c12f7b961e3871452b69102adf942797be2221449
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=random+real+us+address', which is likely used to funnel users to malicious sites. The document body contains obfuscated text and references to the redirector URL, reinforcing its role as a lure.

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=random+real+us+address
    • http://files.rottencollective.com/uploads/1/3/1/4/131482976/waxibun.pdf
    • http://files.mercedesclubindia.com/uploads/1/3/1/1/131163959/dunamezat.pdf
    • http://files.76bulbs.com/uploads/1/3/2/6/132695455/lulowuturedagasepep.pdf
    • https://cdn.shopify.com/s/files/1/0430/5698/8311/files/labokobezar.pdf
    • https://cdn.shopify.com/s/files/1/0429/1097/4108/files/75598151250.pdf
    • https://cdn.shopify.com/s/files/1/0439/3828/3678/files/nimigumudaremobaxosizuxox.pdf
    • https://cdn.shopify.com/s/files/1/0446/6917/3923/files/paul_bunyan_communications_webmail.pdf
    • https://cdn.shopify.com/s/files/1/0436/5585/6281/files/how_to_throw_exception_in_java.pdf
    • https://cdn.shopify.com/s/files/1/0435/0499/2408/files/sidaxi.pdf
    • https://cdn.shopify.com/s/files/1/0437/8725/5970/files/wugemazi.pdf
    • https://cdn.shopify.com/s/files/1/0438/1710/7616/files/wemudosuvoverigopure.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31492874922.pdf
    • https://cdn.shopify.com/s/files/1/0431/2127/9138/files/kojevoxutaravuxizevesobo.pdf
    • https://cdn.shopify.com/s/files/1/0436/9501/4056/files/14315458677.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_off00005ffb.bin
aab90bd1aecec3d598d4637b6f0803901ca8c4335833ec172e134a17694cac66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FFB 4732 bytes
font_01_sfnt_off00006fe4.bin
ff51db897b9ecfef9aea4224395603767e3223e69f7812ff916ea48979c5c692		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE4 12128 bytes
font_02_sfnt_off000096cd.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96CD 4324 bytes

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