Malicious PDF — malware analysis report

Static analysis result for SHA-256 382ced15b642c2aa…

MALICIOUS

PDF

48.3 KB Created: 2020-08-02 02:04:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61b4370b697d3eccc7c5ab15d63e6980 SHA-1: dc26d33ddbaf8c8494a5c85ce888063871484e7c SHA-256: 382ced15b642c2aa3521a1abd5e5207a322b7e309f81391edb89d9199d0d342a
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains multiple embedded links, with a critical heuristic firing for a malicious redirector pointing to 'https://ttraff.com/pify?keyword=pdf+to+eps+linux'. Another critical heuristic identified a PDF link farm, with 'https://cdn.shopify.com/s/files/1/0438/3725/9936/files/nodepedesizazibilujigudo.pdf' being the first listed. The presence of a 'download button' heuristic further suggests a lure to trick users into clicking these links. The document body, though heavily obfuscated, contains references to these URLs, reinforcing the malicious redirection attack pattern.

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=pdf+to+eps+linux
    • http://files.lhasaapsocanada.com/uploads/1/3/0/7/130740521/jaxatasubida-kesojeronewate.pdf
    • http://files.nvrenstore.com/uploads/1/3/0/7/130739806/4408988.pdf
    • http://files.essenceofbeautydublin.com/uploads/1/3/1/6/131637057/9362341.pdf
    • https://cdn.shopify.com/s/files/1/0438/3725/9936/files/nodepedesizazibilujigudo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4573/9941/files/69498142133.pdf
    • https://cdn.shopify.com/s/files/1/0431/1914/9216/files/refako.pdf
    • https://cdn.shopify.com/s/files/1/0435/1868/9432/files/hadoop_administration_tutorials.pdf
    • https://cdn.shopify.com/s/files/1/0427/5165/6102/files/38438113125.pdf
    • https://cdn.shopify.com/s/files/1/0429/4089/1292/files/togilubirojabuberip.pdf
    • https://cdn.shopify.com/s/files/1/0431/5866/7415/files/35872881862.pdf
    • https://cdn.shopify.com/s/files/1/0432/2538/3074/files/80937808690.pdf
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/funuxojomotimunelop.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64238793182.pdf
    • https://cdn.shopify.com/s/files/1/0441/0490/8952/files/97544096977.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073c1.bin
a504a978cb30aaaec959e4ec592c5f7b1b59795cd55b0dfce4bac6f44f6fc934
pdf-font-stream PDF embedded font (sfnt) at offset 0x73C1 4680 bytes
font_01_sfnt_off000083c4.bin
95677f0385563bb32c4737d8f25ea89cadda04f1e00387976be0296d170a8ecb
pdf-font-stream PDF embedded font (sfnt) at offset 0x83C4 10260 bytes
font_02_sfnt_off0000a6ea.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xA6EA 4324 bytes