Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e497b77c92748de…

MALICIOUS

PDF

103.2 KB Created: 2020-08-08 14:47:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54319ad58cb59bb4e81a301c83b8749a SHA-1: e249e0dc47b36e857c47ab569c16cc2978e2c76d SHA-256: 7e497b77c92748de04b425b69655256aaebe8d568fd14fd378c90c36bb78ec0e
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=buddhism+a+short+history+pdf', suggesting a lure to download a PDF. The presence of a link farm heuristic further indicates an attempt to manipulate search engine results or distribute malicious content.

Heuristics 3

  • 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.
  • 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=buddhism+a+short+history+pdf
    • http://files.namiramseycounty.org/uploads/1/3/0/8/130813100/borukotamudibof_zepemenupe_sigugotawaj_disidezizemupo.pdf
    • http://files.evge.us/uploads/1/3/0/8/130813616/zalumi.pdf
    • http://files.knzafm.com/uploads/1/3/0/9/130969922/binojemukegelure.pdf
    • http://files.ewengur.com/uploads/1/3/2/6/132681969/kiwojo.pdf
    • https://cdn.shopify.com/s/files/1/0427/4126/8647/files/sakusokezaxarusas.pdf
    • https://cdn.shopify.com/s/files/1/0429/4210/3719/files/maria_west_side_story_partitura_piano.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/faramerujinusopuko.pdf
    • https://cdn.shopify.com/s/files/1/0430/6819/4978/files/43975813332.pdf
    • https://cdn.shopify.com/s/files/1/0434/2166/3397/files/balance_ton_quoi_partition_piano.pdf
    • https://cdn.shopify.com/s/files/1/0433/6074/7688/files/aarti_sangrah_file_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/9183/5545/files/nakeligarenowuvedirawen.pdf
    • https://cdn.shopify.com/s/files/1/0428/4357/0343/files/59092318146.pdf
    • https://cdn.shopify.com/s/files/1/0428/9229/6359/files/tetevibokelumix.pdf
    • https://cdn.shopify.com/s/files/1/0438/8945/9368/files/likasuxadapew.pdf
    • https://cdn.shopify.com/s/files/1/0434/5122/0134/files/xuseguvuputevakufopowes.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_off00015848.bin
f4947cac7c50f2c64c0df24398bc55e14ba8f282df01e98b43005b40de9e4c14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15848 5400 bytes
font_01_sfnt_off00016a82.bin
43bd1c58aeea89c79d7cd3f1d002138e0b26817e48a585f14514493437ae2794		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16A82 11800 bytes

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