Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2c0e3070f469220…

MALICIOUS

PDF

54.4 KB Created: 2020-09-09 20:55:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f53e596d0d29e1369bc1f73c9ce43c0 SHA-1: 65ca39f6258540ca5137c35a27cd7d3f0316afc1 SHA-256: d2c0e3070f4692201c84f01b6ccf5f699b97954c872f11e715603b4c30bb9c80
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/wix?keyword=sample+argumentative+article+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with 'https://static.usrfiles.com/ugd/b7ab08_86bff6087bd847a088bdb9bdd89c8fb5.pdf' being one of the initial links. The document body, though heavily obfuscated, contains a reference to the malicious URL, suggesting a lure to external 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.club/wix?keyword=sample+argumentative+article+pdf
    • http://files.todayhousing.com/uploads/1/3/0/9/130969243/vanamogukalazak.pdf
    • http://rogizep.brand-bullets.com/uploads/1/3/2/3/132303238/5f717573bd07.pdf
    • http://files.missenglandsclass.com/uploads/1/3/2/3/132303151/1029591.pdf
    • http://files.klawockpopag.org/uploads/1/3/0/7/130775222/b09df.pdf
    • http://files.lesleybirchartist.com/uploads/1/3/0/9/130969873/gujokolojibu.pdf
    • https://static.usrfiles.com/ugd/b7ab08_86bff6087bd847a088bdb9bdd89c8fb5.pdf
    • https://static.usrfiles.com/ugd/974a4e_5466e71f3091463585e021ad4c1143b1.pdf
    • https://static.usrfiles.com/ugd/b41a9a_d72d6cc3d53347a89304836bed374c15.pdf
    • https://static.usrfiles.com/ugd/5ed537_904dc2b3178046258b4df4021eaf36e2.pdf
    • https://cdn.shopify.com/s/files/1/0428/7502/7619/files/pesakol.pdf
    • https://cdn.shopify.com/s/files/1/0436/4402/7038/files/419_496_2546.pdf
    • https://cdn.shopify.com/s/files/1/0433/4161/1173/files/mewit.pdf
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/applied_hydrogeology_fetter.pdf
    • https://cdn.shopify.com/s/files/1/0434/7396/1126/files/grammar_english_free_download.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_off000095a6.bin
baed409bcddc7ea70fa1c19b34519a8c2d1a201f5272f38eb47b988e8112b591		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95A6 5460 bytes
font_01_sfnt_off0000a828.bin
f274e78cf5e0c104072bc499d73e1e5206441b4878cc01c08e39fab0dad4bf49		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA828 10640 bytes

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