Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5135c887a0ce4c1…

MALICIOUS

PDF

34.4 KB Created: 2020-08-21 23:30:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45b1afd4491c0e61a623c82e5328913e SHA-1: 96be73928d37fa8648e95d7c16f59a9c4065b113 SHA-256: a5135c887a0ce4c17b0d2d18490391316d1ca3fc2ddb0d14eeb550d49f47c656
160 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to external resources. One critical heuristic indicates a malicious redirector link, and another identifies a link farm pattern. The document body, though heavily obfuscated, contains text that appears to be related to payment information, aligning with the 'SE_PAYMENT_REDIRECT_LURE' heuristic. The primary malicious URL identified is ttraff.ru, which is likely used to redirect the user to a further malicious destination.

Heuristics 4

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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.ru/pify?keyword=chaitali+patel+information
    • http://faxum.themaggiesociety.com/uploads/1/3/1/4/131406390/9550989.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lexopiwalosadatijasaz.pdf
    • https://cdn.shopify.com/s/files/1/0432/4609/2443/files/73790856842.pdf
    • https://cdn.shopify.com/s/files/1/0437/4921/2311/files/79807769970.pdf
    • https://cdn.shopify.com/s/files/1/0439/9906/8318/files/wokururoxapamed.pdf
    • https://cdn.shopify.com/s/files/1/0432/5667/6510/files/pilolo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3598/4029/files/hopeful_bam_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0428/8859/3567/files/63181593236.pdf
    • https://cdn.shopify.com/s/files/1/0433/7342/8888/files/29887918697.pdf
    • https://cdn.shopify.com/s/files/1/0432/5870/8136/files/hypertension_guideline_2017.pdf
    • https://cdn.shopify.com/s/files/1/0428/5313/8588/files/41042342686.pdf
    • https://cdn.shopify.com/s/files/1/0435/7623/0047/files/lafiwemotaxovekugesibeni.pdf
    • https://cdn.shopify.com/s/files/1/0440/6365/4040/files/purpose_of_assessment_in_special_education.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_off000048e0.bin
4085f5bfc928dc260c7229dd67d1947bf1a606fe51791d204e47932d17590843		 pdf-font-stream PDF embedded font (sfnt) at offset 0x48E0 4868 bytes
font_01_sfnt_off00005942.bin
6b615f8c109ae107a8e2e2cde6afce3057f11da25b258218b3ebf695fb56b5b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5942 10392 bytes

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