Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d756b2c89e8484b…

MALICIOUS

PDF

40.5 KB Created: 2020-09-19 06:30:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c25f5f9acd9b60878263c3ff5171316 SHA-1: d84d82c65116812d078714d2e3e129418c744b9b SHA-256: 7d756b2c89e8484b27fb74957c1eb7e3f4306bf953df3ffd734688e40b59c971
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, including a critical redirector link to 'https://ttraff.link/wix?keyword=after+eating+dua+arabic'. It also exhibits characteristics of a link farm, with many links pointing to PDF files hosted on various domains. The document body contains garbled text and metadata indicating it was generated by wkhtmltopdf, suggesting it's not a legitimate document but rather a container for malicious links. The primary attack pattern is to trick users into clicking these links, leading them to potentially harmful sites.

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.link/wix?keyword=after+eating+dua+arabic
    • http://rilirem.fccfrankfort.org/uploads/1/3/2/6/132680874/wunupipekagudagiveg.pdf
    • http://files.lancasterjazz.com/uploads/1/3/1/6/131637114/sadaxizawexalumewe.pdf
    • http://giguxeka.charterfishingbradenton.com/uploads/1/3/1/4/131407588/5235887.pdf
    • https://d0fc243f-640f-4ba7-892e-478f2e823898.filesusr.com/ugd/a58502_c8f6c73133554b198dcdf1df85691e96.pdf?index=true
    • https://19867a25-dc77-425f-97a9-ab14bda4a674.filesusr.com/ugd/9df9d6_d200703251a848a6b97a32655d8de01f.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0434/2949/4936/files/99546339971.pdf
    • https://cdn.shopify.com/s/files/1/0471/0678/5430/files/81525121532.pdf
    • https://cdn.shopify.com/s/files/1/0433/0065/1158/files/harvard_business_review_strategy.pdf
    • https://cdn.shopify.com/s/files/1/0432/1135/8369/files/fuwojabutesipup.pdf
    • https://cdn.shopify.com/s/files/1/0438/8736/2216/files/94193318262.pdf
    • https://cdn.shopify.com/s/files/1/0431/0230/6468/files/big_ideas_math_algebra_2_answers.pdf
    • https://cdn.shopify.com/s/files/1/0450/4364/6614/files/hemoglobin_formation.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_off000061a7.bin
182cfc2bad974713ebfd52594ad030563426963e8e02e59fc5209a31762f5d35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61A7 5108 bytes
font_01_sfnt_off00007319.bin
0344888bd52ebd1bc899cb5d279c2d0910a504ae9c4d400c7509ec948557be9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7319 10172 bytes

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