Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ee1404c1ead0228…

MALICIOUS

PDF

42.1 KB Created: 2020-08-24 11:50:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2cf72ad4000529361944f326d7f0cfaf SHA-1: 328c67bc5f2288f3b164171c9e11fc6fe122a967 SHA-256: 4ee1404c1ead02280aa1ed365b143f488f8352c312bd2a276c2bc8a0793a32d4
162 Risk Score

Malware Insights

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

The PDF file contains a lure to download 'Uc browser for pc windows 7', directing users to a malicious redirector at 'https://ttraff.com/pify?keyword=uc+browser++for+pc+windows+7'. It also functions as a link farm, embedding numerous external PDF links, many hosted on cdn.shopify.com. The primary attack pattern involves social engineering to trick users into clicking malicious links, likely leading to further malware downloads or credential theft.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=uc+browser++for+pc+windows+7
    • http://files.cvatclub.org/uploads/1/3/1/3/131382590/7825738.pdf
    • https://cdn.shopify.com/s/files/1/0431/9612/1251/files/the_black_hole_2015_full_movie.pdf
    • https://cdn.shopify.com/s/files/1/0431/8402/9854/files/lawokapo.pdf
    • https://cdn.shopify.com/s/files/1/0438/8116/9051/files/goalkeeper_ciws.pdf
    • https://cdn.shopify.com/s/files/1/0441/2545/4488/files/annabac_maths_ts.pdf
    • https://cdn.shopify.com/s/files/1/0431/5018/0514/files/36032935361.pdf
    • https://cdn.shopify.com/s/files/1/0430/6593/3973/files/pudataredima.pdf
    • https://cdn.shopify.com/s/files/1/0432/6791/5936/files/perigejadaritowijog.pdf
    • https://cdn.shopify.com/s/files/1/0428/7198/0198/files/navanozogimo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6377/1293/files/burket_oral_medicine_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/0665/6666/files/parameters_in_java.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_off000067d9.bin
53ac5c0340d18bebb83ddde6a4c83b726df507472148871e3bd1d794bf0cc225		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67D9 5208 bytes
font_01_sfnt_off000079b6.bin
528c1126597df723648e752ed2d614402bb387387b6b9e0cd1d503012a5481ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79B6 10080 bytes

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