Malicious PDF — malware analysis report

Static analysis result for SHA-256 955391af4105df7e…

MALICIOUS

PDF

42.8 KB Created: 2020-08-23 01:05:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 22ed93b6abcaa6a0bba9107544e8c406 SHA-1: 3bfc3684404a47dd2b2c0f868b6dacd0966371db SHA-256: 955391af4105df7ebcccb7148f8eee625b95331cfb197ce8e7f92281198c53b8
130 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'bloatware removal' and the malicious URL. The primary attack pattern involves luring the user to click a link that leads to malicious infrastructure, likely for further exploitation or malware delivery.

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=remove+bloatware+android+without+root+2019
    • http://files.scarboroughresidentialalternatives.ca/uploads/1/3/1/4/131454262/dimebiravud-vitit.pdf
    • http://nenigig.christhomasguitar.com/uploads/1/3/0/7/130776078/227792f35.pdf
    • https://cdn.shopify.com/s/files/1/0432/1624/0807/files/40837059823.pdf
    • https://cdn.shopify.com/s/files/1/0428/2023/9519/files/breezin_george_benson.pdf
    • https://cdn.shopify.com/s/files/1/0435/6017/3717/files/i_like_me_better_lauv_video.pdf
    • https://cdn.shopify.com/s/files/1/0433/3859/6510/files/20610347517.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/52182587786.pdf
    • https://cdn.shopify.com/s/files/1/0431/4336/4759/files/52830118643.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1797/files/pijinax.pdf
    • https://cdn.shopify.com/s/files/1/0430/7494/5184/files/zerusuvawokazamareren.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_off000064a6.bin
d49a672d1892aded1d06658584bf087d178339649629d9a514d876bd4e9df0e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x64A6 5668 bytes
font_01_sfnt_off000077d5.bin
107817c84ebb7303582728a402c98b681f50017ebe9d9ceca3e4b128e5a74776
pdf-font-stream PDF embedded font (sfnt) at offset 0x77D5 11708 bytes