Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2d2bb1a9a35173f…

MALICIOUS

PDF

33.2 KB Created: 2020-08-20 05:52:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5dfee384948442a51efae9df50783dd6 SHA-1: 47f28008114ba64f614e5644eb5217fa324b909f SHA-256: b2d2bb1a9a35173f1750ea8ee7951a798d90208089e6fb28bc8237ddbd0917f7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in

The PDF file contains a significant number of embedded URLs, with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains a URL that matches the redirector. The presence of a link farm suggests an attempt to distribute malicious content or phish users. No scripts were extracted from this sample.

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=cmore+hits+tv+guide
    • http://nejarutam.mssantanabiology.org/uploads/1/3/1/3/131398003/2993637.pdf
    • https://cdn.shopify.com/s/files/1/0438/2566/0066/files/45305665014.pdf
    • https://cdn.shopify.com/s/files/1/0432/7194/6398/files/99481876068.pdf
    • https://cdn.shopify.com/s/files/1/0432/9160/7190/files/77996850096.pdf
    • https://cdn.shopify.com/s/files/1/0431/7279/0428/files/chemistry_notes_for_class_9_in_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0792/5654/files/62901190633.pdf
    • https://cdn.shopify.com/s/files/1/0430/9961/9492/files/72011971917.pdf
    • https://cdn.shopify.com/s/files/1/0434/5433/3093/files/jivoluxud.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/77636621448.pdf
    • https://cdn.shopify.com/s/files/1/0433/0107/7142/files/457668218.pdf
    • https://cdn.shopify.com/s/files/1/0434/1334/0316/files/aarum_kaanathe_aarum_ariyathe_song_lyrics.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_off00004505.bin
e2251b51506e5224728752d58ed5adea1cca9997f8afe23f610881afcf602c38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4505 4964 bytes
font_01_sfnt_off000055c8.bin
406643dda609d502d52495b02275da7fa2725713e40c2c528b6c767a97ca1c24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55C8 10384 bytes

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