Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3ead6d6c7d0aaf7…

MALICIOUS

PDF

50.0 KB Created: 2020-08-30 10:48:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab2b1d073d6cd0d295a70ce915febf5d SHA-1: a05f38cadcd0d8422307c83d74f8553b1b86acca SHA-256: c3ead6d6c7d0aaf77d1773135229b0b4f1b32a1c24bc34447fb1faa69951da7a
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the redirector. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute malicious content. No scripts were extracted, limiting the analysis of further payload delivery or execution.

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/wix?keyword=ae1+active+manual
    • https://cdn.shopify.com/s/files/1/0430/7730/4484/files/clash_of_clans_apk_uptodown.pdf
    • https://cdn.shopify.com/s/files/1/0435/5552/0673/files/71967911770.pdf
    • https://cdn.shopify.com/s/files/1/0429/8879/8111/files/calidad_de_vida_en_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0431/8255/5297/files/vakibawitosavi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nagexonulelaxefirulilona.pdf
    • https://cdn.shopify.com/s/files/1/0432/2754/5757/files/gimulidomaw.pdf
    • https://cdn.shopify.com/s/files/1/0430/2834/9085/files/6959710239.pdf
    • https://cdn.shopify.com/s/files/1/0463/0455/9261/files/12991790189.pdf
    • https://cdn.shopify.com/s/files/1/0431/4837/8280/files/nawixebifotuzilovine.pdf
    • https://cdn.shopify.com/s/files/1/0429/0691/0887/files/piwigubuva.pdf
    • https://static.usrfiles.com/ugd/b8c837_3d7decd2b1cc4cf390df266a4601fc14.pdf
    • https://static.usrfiles.com/ugd/b8c837_5d14f62adef8440894aca4ea24f42775.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063e7.bin
36d35c14bd4854eaa8550e29825f12f2f5ed471f428e9288164949ebe13d4994		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63E7 4544 bytes
font_01_sfnt_off00007345.bin
8254ad267eb246e58e67714f086643d6ba17252a40b36d01a2c17fc697cfff5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7345 10672 bytes
font_02_sfnt_off000097f2.bin
fd2e26fc2f803dcf07b0b58048f95075aa07ade0877caf7b60c502d13bd4189b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97F2 16196 bytes
font_03_sfnt_off0000ad37.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD37 4324 bytes

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