Malicious PDF — malware analysis report

Static analysis result for SHA-256 571f9e2e62f6c5d9…

MALICIOUS

PDF

43.8 KB Created: 2020-08-22 01:12:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45da92217b68ecfc0510f98444d30b57 SHA-1: e45b24ab935128b398c379c37edd780f407d7cd2 SHA-256: 571f9e2e62f6c5d9d3a2f298db755170cf763e563bd177c8e85a9b824373ee26
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=surah+baqarah+song'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on shopify.com, likely for SEO manipulation to increase visibility. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing the malicious intent. The primary attack pattern involves luring users to malicious infrastructure via a deceptive link.

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.ru/pify?keyword=surah+baqarah+song
    • http://losuw.tlcthelearningcenter.com/uploads/1/3/2/6/132681459/5c20a90.pdf
    • http://files.brookwoodlearning.com/uploads/1/3/2/6/132695258/3715178.pdf
    • https://cdn.shopify.com/s/files/1/0435/6728/4387/files/vujasejaragifele.pdf
    • https://cdn.shopify.com/s/files/1/0429/6278/0311/files/zudinav.pdf
    • https://cdn.shopify.com/s/files/1/0439/6787/3182/files/sega_emulator_android.pdf
    • https://cdn.shopify.com/s/files/1/0439/8376/5662/files/basketball_ball_handling_workout.pdf
    • https://cdn.shopify.com/s/files/1/0431/7629/6605/files/speciation_definition_biology.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/26825328676.pdf
    • https://cdn.shopify.com/s/files/1/0438/5754/3328/files/84263410092.pdf
    • https://cdn.shopify.com/s/files/1/0434/2985/5393/files/bay_area_circuits.pdf
    • https://cdn.shopify.com/s/files/1/0440/8747/6389/files/16462652016.pdf
    • https://cdn.shopify.com/s/files/1/0439/2851/8824/files/navy_seal_sniper_training_manual.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_off00005f74.bin
124d1264d6ee5e8311e05ceb616c8876e20374156fff84c5e8d389f453d1a4c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F74 4920 bytes
font_01_sfnt_off00007004.bin
4dbfb900ba7bc7072662526c3f3542d874dbc18df77c055605442ce7e63066cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7004 10768 bytes
font_02_sfnt_off000094c1.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94C1 4324 bytes

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