Malicious PDF — malware analysis report

Static analysis result for SHA-256 73d36a92ff95faad…

MALICIOUS

PDF

35.6 KB Created: 2020-08-21 12:24:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0d18a8a9f593dd39e4eac8d05bff668d SHA-1: 41c6ba7e677aed9e9cc17546aec1d783c9554636 SHA-256: 73d36a92ff95faad30ee4a87c4f14911c5e6db09856d79ae22d331f53e747c3d
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=picsart+png+background+hd+2019'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to Shopify domains, one of which is 'https://cdn.shopify.com/s/files/1/0431/5742/2229/files/29978199648.pdf'. The presence of a 'download button' lure further supports the malicious intent of redirecting users to potentially harmful content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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+png+background+hd+2019
    • http://files.report2dancefloor.com/uploads/1/3/1/4/131483184/2b32236a7e.pdf
    • http://wapotozuz.phildicksonplaysmusic.com/uploads/1/3/1/6/131636664/soligasaxetavukiru.pdf
    • http://files.c4dm.net/uploads/1/3/0/7/130775506/6486740.pdf
    • http://files.post37.com/uploads/1/3/0/8/130814492/6882512.pdf
    • http://fovimebuv.sharimycek.com/uploads/1/3/0/7/130739974/roxupubanudawar_xovamo_vunedesej_paxoxewitupi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/29978199648.pdf
    • https://cdn.shopify.com/s/files/1/0437/4288/8097/files/leluduxoki.pdf
    • https://cdn.shopify.com/s/files/1/0436/8682/2053/files/63729933935.pdf
    • https://cdn.shopify.com/s/files/1/0428/1358/7623/files/25366336592.pdf
    • https://cdn.shopify.com/s/files/1/0433/0248/6180/files/15636255739.pdf
    • https://cdn.shopify.com/s/files/1/0427/4677/3660/files/50006937467.pdf
    • https://cdn.shopify.com/s/files/1/0438/5426/6533/files/8646164914.pdf
    • https://cdn.shopify.com/s/files/1/0432/7342/0965/files/legufut.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9760/files/antenatal_exercise_in_malayalam.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_off00004d32.bin
6a74201592ee2b7cb5813be177275678948ce64a63d14e4f9686fc8ef4f27b82
pdf-font-stream PDF embedded font (sfnt) at offset 0x4D32 5992 bytes
font_01_sfnt_off0000617c.bin
cdf7a2402d4614d76f757147444fa20c6eb997d56366b9b3cd90df3418aa46be
pdf-font-stream PDF embedded font (sfnt) at offset 0x617C 9348 bytes