Malicious PDF — malware analysis report

Static analysis result for SHA-256 3da55056c052f131…

MALICIOUS

PDF

45.4 KB Created: 2020-07-26 01:39:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08a41dc47f5657a914159e0167f51504 SHA-1: 8600ef20dda06022ca00d39283b0f3b255afb8c0 SHA-256: 3da55056c052f131c5d3d47b4569ac147da65adf3c5d5969bf9c44fcd25c0ebc
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one heuristic specifically flagging a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, suggests a lure related to design templates. The presence of a 'download button' heuristic further supports a malicious workflow. The primary attack pattern involves tricking the user into clicking a link that leads to malicious 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.cc/pify?keyword=magazine+front+page+design+template
    • http://files.romanstravelwithcare.com/uploads/1/3/1/4/131407493/8157284.pdf
    • http://files.colombotourpackages.com/uploads/1/3/0/8/130873708/xulizajelinif-zisuz-datesededezapof.pdf
    • http://files.amitybrusharborchurch.com/uploads/1/3/1/4/131452799/wafup.pdf
    • http://files.imandycole.com/uploads/1/3/0/7/130775685/zemekafudimoruri.pdf
    • http://files.mevideography.com/uploads/1/3/2/8/132816195/pawezoxiviloxam-pixosaxi-majelo.pdf
    • https://cdn.shopify.com/s/files/1/0439/0522/0763/files/gibotivafufowajubuwevama.pdf
    • https://cdn.shopify.com/s/files/1/0431/1223/5159/files/74011773097.pdf
    • https://cdn.shopify.com/s/files/1/0432/4173/4311/files/7974664308.pdf
    • https://cdn.shopify.com/s/files/1/0439/5103/0430/files/8457274251.pdf
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/27628900825.pdf
    • https://cdn.shopify.com/s/files/1/0437/3748/1365/files/widuxedeje.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6436/files/71312540312.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81603963226.pdf
    • https://cdn.shopify.com/s/files/1/0428/7820/6111/files/49590509251.pdf
    • https://cdn.shopify.com/s/files/1/0434/0803/1893/files/88126075514.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94260126358.pdf
    • https://cdn.shopify.com/s/files/1/0430/3549/2503/files/34193589750.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_off000074d1.bin
5f6efac52b2710c7d2ed1b6b52ade0d3cb4b9d958b8f6e25e696a1fd47e8ea7c
pdf-font-stream PDF embedded font (sfnt) at offset 0x74D1 5204 bytes
font_01_sfnt_off00008674.bin
71aa5fee74ac2a1873d6e5a8e35ca2d219a516ae4e0a911ae41b408f7d372e44
pdf-font-stream PDF embedded font (sfnt) at offset 0x8674 9844 bytes