Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c31a217e45ce9be…

MALICIOUS

PDF

42.7 KB Created: 2020-08-24 16:01:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d4abac4f517dd1a6d8ff8913653547f SHA-1: f3764536fe5d21db1b9657b8cd37616f782ca31d SHA-256: 7c31a217e45ce9be2a1b1827d67b024ee73a3d854c90773eb93284062ecc18fc
120 Risk Score

Malware Insights

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

The PDF file contains a "Parental advisory logo" and numerous embedded links, many of which point to domains associated with link farms and redirectors. The primary malicious URL identified is https://ttraff.ru/pify?keyword=parental+advisory+logo, which is flagged as a known malicious redirector. The document's structure suggests an attempt to obfuscate malicious intent through a large number of links, likely leading to further malicious content or phishing pages.

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=parental+advisory+logo
    • http://sepuruxo.sarahgray.info/uploads/1/3/1/6/131606227/5577677.pdf
    • http://files.tsongpl.com/uploads/1/3/1/4/131406269/f0bf2b9.pdf
    • http://gorogupax.voiceoverdoctor.com/uploads/1/3/0/8/130814328/f1aed9.pdf
    • http://pevazibin.lcandlepress.com/uploads/1/3/0/7/130776082/deserivum-vajikijirixa.pdf
    • https://cdn.shopify.com/s/files/1/0435/3038/7607/files/vpn_android_free_internet.pdf
    • https://cdn.shopify.com/s/files/1/0431/8209/6541/files/74334559975.pdf
    • https://cdn.shopify.com/s/files/1/0431/5496/4637/files/jexinanowaxokigep.pdf
    • https://cdn.shopify.com/s/files/1/0434/1802/6140/files/online_editor_chrome.pdf
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/bamu_result_2020_bsc.pdf
    • https://cdn.shopify.com/s/files/1/0431/6499/1637/files/jeppesen_instrument_commercial.pdf
    • https://cdn.shopify.com/s/files/1/0437/8122/6657/files/zixewibeji.pdf
    • https://cdn.shopify.com/s/files/1/0432/1184/9892/files/avoidant_personality_disorder_case_study.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/piguxifuka.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_off00006a3f.bin
7ce1b6d42b7eab64b53ff34d9d12edadad25ccf6cf66838a8cbcaa5c32530958		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A3F 5156 bytes
font_01_sfnt_off00007be2.bin
2d4488a59b1185c74f6d7bc8404df6eaf8495d1789a996c4b59c34b593b5b677		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE2 10120 bytes

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