Malicious PDF — malware analysis report

Static analysis result for SHA-256 28ef8de032dcfaff…

MALICIOUS

PDF

41.1 KB Created: 2020-09-03 04:29:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46013761687927885241c870092a0895 SHA-1: 2fb31d5eb32fe581e34be4c62c0b8d953bb7d293 SHA-256: 28ef8de032dcfaffc7ebff1aef1280fd576bc1ee8018d0fdfc546c8e1994249d
120 Risk Score

Malware Insights

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

The PDF document contains a link farm designed to lure users into downloading cracked software, specifically mentioning 'Cinema 4D r20 free with crack'. The primary malicious indicator is the embedded URL pointing to a redirector, which is a common tactic for distributing malware or leading users to phishing sites. The document body itself is heavily obfuscated but contains the malicious URL and references to software downloads.

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.link/wix?keyword=cinema+4d+r20+free++with+crack
    • https://cdn.shopify.com/s/files/1/0430/4447/0938/files/biwadixatuxit.pdf
    • https://cdn.shopify.com/s/files/1/0431/6708/8800/files/43368890340.pdf
    • https://cdn.shopify.com/s/files/1/0437/6533/4165/files/business_communication_today_10th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/5802/0000/files/soxoragedutebijemikige.pdf
    • https://static.usrfiles.com/ugd/7cefa9_57c15a6943c04fe8b0caacf64157b384.pdf
    • https://static.usrfiles.com/ugd/d90490_a61026e71a904c36a7b646f6e9bf9dbc.pdf
    • https://cdn.shopify.com/s/files/1/0429/0006/2367/files/calendario_academico_ufsc_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/2650/5118/files/8124129140.pdf
    • https://cdn.shopify.com/s/files/1/0438/5007/2224/files/bikijutofazunepireba.pdf
    • https://cdn.shopify.com/s/files/1/0432/6411/4852/files/meiosis_and_mitosis_quiz_answers.pdf
    • https://static.usrfiles.com/ugd/b8c837_12c70df8f6874c928cbe2bf06766e928.pdf
    • https://static.usrfiles.com/ugd/229b11_4593ceb8124247edaf9241746bff58e9.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_off000061c5.bin
b37271939ecb3d378213456cdd603749e4a2658a74bde14f3e49ffaca155fd21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61C5 5472 bytes
font_01_sfnt_off0000744e.bin
33a117ccb90562bd4be01b626f59cf961050e6c2c53e1c6d2886a908318eba90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x744E 10676 bytes

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