Malicious PDF — malware analysis report

Static analysis result for SHA-256 29f90a9141b00bdb…

MALICIOUS

PDF

40.7 KB Created: 2020-08-17 18:16:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf738239c42384df29a19be246c48e86 SHA-1: 958c1d8c02c6783c8a87bb5773e26ddd499be77d SHA-256: 29f90a9141b00bdba15b34f8b41032bdfe35b7a4c52dae5087e0688f7b3a1347
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is further reinforced by the document body mentioning 'Picsart premium apk onhax'. This suggests a social engineering lure to trick users into clicking the link. The PDF also hosts a large number of external links, many hosted on Shopify, indicating a link farm for SEO manipulation or distribution. No scripts were extracted from this sample.

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=picsart+premium+apk+onhax
    • http://files.xcelerationvbc.com/uploads/1/3/1/3/131383743/pivarafu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5671/files/natedamitajomumogakitafo.pdf
    • https://cdn.shopify.com/s/files/1/0436/0539/3571/files/pemdas_color_by_number.pdf
    • https://cdn.shopify.com/s/files/1/0434/7448/5400/files/56855357490.pdf
    • https://cdn.shopify.com/s/files/1/0434/3742/4807/files/77485657844.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18608783112.pdf
    • https://cdn.shopify.com/s/files/1/0429/6094/5305/files/77741122004.pdf
    • https://cdn.shopify.com/s/files/1/0433/3853/0965/files/72411209168.pdf
    • https://cdn.shopify.com/s/files/1/0434/6304/9378/files/total_gym_2000.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_off000061d4.bin
87f683509fb8f97bafe6b9245bb2a3e1e9778b6b4e894ba14d98be4e45ce7cd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61D4 5272 bytes
font_01_sfnt_off00007398.bin
88383538a17f5d3ab540c85541bf6bcb9a9cb6ce47fee0a0eafdf569cc5de5d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7398 10180 bytes

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