Malicious PDF — malware analysis report

Static analysis result for SHA-256 52b5aaaca511d189…

MALICIOUS

PDF

53.2 KB Created: 2020-09-10 07:19:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1d2acbcb0bf9c2da35a8e023e832bd0 SHA-1: e73b71307b5e45cd6b1a6220a8ec2335d5e86ed9 SHA-256: 52b5aaaca511d189591773f29a0c895f82402160160a9ea4c0ddabd4914908ae
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a game leveling guide. This suggests the document's primary purpose is to redirect users to malicious sites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.club/pify?keyword=ragnarok+eternal+love+leveling+guide+spot
    • http://files.realmegaworldproperties.com/uploads/1/3/1/4/131437685/f25ac.pdf
    • http://files.serverlyf.com/uploads/1/3/2/8/132816195/zepakeni.pdf
    • http://files.salembasketballofficials.org/uploads/1/3/1/0/131071063/607ae1.pdf
    • https://static.usrfiles.com/ugd/9a242c_980d66145f004c898e91f7f4f3b5680f.pdf
    • https://static.usrfiles.com/ugd/b8c837_4e879196731f4fcd8f61cb0a8b758c74.pdf
    • https://static.usrfiles.com/ugd/9c43ec_91c9e963e9644eecacc1c062935d974d.pdf
    • https://static.usrfiles.com/ugd/762c1a_f24b85ecdbcf4af8ac1fb675e1f2276f.pdf
    • https://cdn.shopify.com/s/files/1/0432/9163/9974/files/teberesevojuzobunikomami.pdf
    • https://cdn.shopify.com/s/files/1/0431/7433/0517/files/wolf_team_hack_2015.pdf
    • https://cdn.shopify.com/s/files/1/0433/6081/3208/files/nuwerepowupid.pdf
    • https://cdn.shopify.com/s/files/1/0437/8548/6485/files/adjectives_in_french.pdf
    • https://cdn.shopify.com/s/files/1/0433/8447/1719/files/meme_faces_text.pdf
    • https://cdn.shopify.com/s/files/1/0437/4275/7013/files/gobarudunipaxi.pdf
    • https://cdn.shopify.com/s/files/1/0447/9864/0288/files/20881986082.pdf
    • https://cdn.shopify.com/s/files/1/0463/6816/1953/files/fijitowisupirezoxuk.pdf
    • https://cdn.shopify.com/s/files/1/0430/6187/0741/files/sinad.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_off00008710.bin
ae4fb6a05e5241549439f6c7ff9b74e643441121d45299c9cccc1f4662d2b8fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8710 5256 bytes
font_01_sfnt_off00009913.bin
5b42962cc18f04ef0d2bd9b2661ec586750459786260927756e17786ed55a1d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9913 15144 bytes

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