Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e2558fac61f5286…

MALICIOUS

PDF

47.9 KB Created: 2020-08-23 02:19:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8f584294b74da0d1d4a161b9923b51c SHA-1: 2c24b7ecf2ed7ea0ead6a85653354a1f8e1409a5 SHA-256: 4e2558fac61f52868bdb69228f73c1a1a7f097febbd65c519f2c2518186bf165
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=bcbs+al+provider+manual+2018'. This URL is designed to lure users to malicious infrastructure. The document also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to improve search engine visibility for malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.cc/pify?keyword=bcbs+al+provider+manual+2018
    • http://files.saylorflett.com/uploads/1/3/0/7/130740462/6180337.pdf
    • https://cdn.shopify.com/s/files/1/0433/0278/1083/files/8610900629.pdf
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/31129793981.pdf
    • https://cdn.shopify.com/s/files/1/0432/5087/6578/files/english_arabic_medical_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0434/7422/3269/files/dogoxupenelupuxidibaviwa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0279/7986/files/14941191655.pdf
    • https://cdn.shopify.com/s/files/1/0428/2223/8374/files/2003_ford_taurus_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/7829/5450/files/lukikupemif.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vabagibad.pdf
    • https://cdn.shopify.com/s/files/1/0432/1184/9890/files/95558902380.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69296453687.pdf
    • https://cdn.shopify.com/s/files/1/0431/8196/5474/files/halloween_flyer_templates_free_for_word.pdf
    • https://cdn.shopify.com/s/files/1/0430/9277/0977/files/91234039237.pdf
    • https://cdn.shopify.com/s/files/1/0438/6547/3184/files/58337851220.pdf
    • https://cdn.shopify.com/s/files/1/0432/6211/6008/files/gixifajoxemaz.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off000097ef.bin
981178a37e99c54db337fe8ca473596aba0b5b514841865b47fb13fe181c1000		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x97EF 17324 bytes
font_00_sfnt_off000044c6.bin
4f3ecdd2342e05d4195def02b63fffcc45e7646e473e242dfb5fcce07b9c8ed3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x44C6 3936 bytes
font_01_sfnt_off000052f4.bin
576d95ac4ffc8b3bd76dfe291a91150350f7d919f05b4c71dc204b52290e45d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52F4 5988 bytes
font_02_sfnt_off00006734.bin
4910d0177da9f60ecc92c13a34fae8c5c38ffafb9e4e22a3c3fd987548b79157		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6734 6148 bytes
font_03_sfnt_off00007714.bin
277a06c0736e52767f0743d03a3d9cd4afbfcc39b18d137e65c4105efa225202		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7714 9732 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.