Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e49410b7c754885…

MALICIOUS

PDF

52.0 KB Created: 2020-08-22 22:59:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 587d73d4f2aadbb281e0c5a301adecfa SHA-1: e73aa83c4803fe73950b937aab71bd851bb55942 SHA-256: 3e49410b7c754885276ac1469b2863ce2f1e666093a137a4ccc92129c2050eb6
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a redirector link to 'ttraff.ru', indicating a phishing or malicious content delivery attempt. The document body, though heavily obfuscated, contains the same redirector URL. The presence of numerous PDF links, many hosted on Shopify, suggests an attempt to game search engine results for visibility. No scripts were extracted from this sample.

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.ru/pify?keyword=hot+wheels+race+off+game
    • http://files.photographybypatti.com/uploads/1/3/0/7/130738748/685123.pdf
    • http://files.kimstensions.com/uploads/1/3/0/8/130813898/2290250.pdf
    • http://purasiju.lilafamilyyoga.com/uploads/1/3/1/3/131383629/gidoxofabejapanoma.pdf
    • http://giwedod.laocdb.com/uploads/1/3/1/4/131482916/jagewomum.pdf
    • http://giwedod.laocdb.com/u
    • https://cdn.shopify.com/s/files/1/0435/5447/2087/files/353388432.pdf
    • https://cdn.shopify.com/s/files/1/0432/3383/7219/files/advanced_charts_in_excel_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/6749/0972/files/czasowniki_nieregularne_angielski_b1.pdf
    • https://cdn.shopify.com/s/files/1/0431/6866/1670/files/mutaveripatud.pdf
    • https://cdn.shopify.com/s/files/1/0434/5253/0845/files/18248966148.pdf
    • https://cdn.shopify.com/s/files/1/0437/4141/3527/files/adform_kiemelis_rekvizitai.pdf
    • https://cdn.shopify.com/s/files/1/0440/4386/2181/files/judexifawaferapase.pdf
    • https://cdn.shopify.com/s/files/1/0431/9212/3560/files/libro_curso_de_ingles_basico.pdf
    • https://cdn.shopify.com/s/files/1/0431/0745/1042/files/35330065488.pdf
    • https://cdn.shopify.com/s/files/1/0429/3384/6175/files/dajukivifol.pdf
    • https://cdn.shopify.com/s/files/1/0435/6397/4805/files/fijopativos.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_off00008b2b.bin
5e750d737f46e6fc8d40ecc7595fe85e1c430d459bee6ed28fc1f4e8ef8b6400		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B2B 5348 bytes
font_01_sfnt_off00009d48.bin
b184f91c37b040cf0720a1faa65a5e0efa886f37a60902cca75f997bd37f6c3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D48 11196 bytes

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