Malicious PDF — malware analysis report

Static analysis result for SHA-256 a77001514a3c3ba3…

MALICIOUS

PDF

45.9 KB Created: 2020-08-22 18:08:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae4d8c32d5371098deed30330906e12f SHA-1: b5992d0af586a00e91c9d5c6614329de9061882a SHA-256: a77001514a3c3ba320c44c6c91d430af90e83fbefa4d250743485e628605daa8
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=aaa+travel+guides+japan'. Additionally, it features a PDF link farm heuristic, with the first URL being 'https://cdn.shopify.com/s/files/1/0432/7853/2761/files/babuti.pdf'. The document body contains text related to travel guides and the malicious URL, suggesting a lure to a malicious site.

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=aaa+travel+guides+japan
    • http://files.redrunebooks.com/uploads/1/3/1/4/131411688/wukuf-kitawawizani.pdf
    • http://files.donzhenphoto.com/uploads/1/3/0/8/130813827/1534176.pdf
    • https://cdn.shopify.com/s/files/1/0432/7853/2761/files/babuti.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/99658985773.pdf
    • https://cdn.shopify.com/s/files/1/0427/5830/8006/files/43344216568.pdf
    • https://cdn.shopify.com/s/files/1/0435/3651/5224/files/arthritis_research_uk_back_pain_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0438/4486/2114/files/98450726749.pdf
    • https://cdn.shopify.com/s/files/1/0436/6280/3097/files/informatica_idq_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6334/files/18796535684.pdf
    • https://cdn.shopify.com/s/files/1/0440/0663/7726/files/davosifak.pdf
    • https://cdn.shopify.com/s/files/1/0435/3264/8602/files/26264772711.pdf
    • https://cdn.shopify.com/s/files/1/0435/4949/1359/files/financial_management_brigham.pdf
    • https://cdn.shopify.com/s/files/1/0431/5866/7430/files/linaxufimorosewitebab.pdf
    • https://cdn.shopify.com/s/files/1/0437/9072/9377/files/british_english_vs_american_english_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/31288577592.pdf
    • https://cdn.shopify.com/s/files/1/0434/8762/5369/files/bivosotazemerelurunutepiw.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_off0000748d.bin
b3826140b4662e78db7635f527821036da93df4fbb57807ae6f8ce942d317a07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x748D 5252 bytes
font_01_sfnt_off00008685.bin
80d2a4d93d8b338aedbaa99bc0bd4524adc2e651dc918449a84cbde8308518ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8685 10524 bytes

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