Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c15160d5c798d3f…

MALICIOUS

PDF

42.1 KB Created: 2020-08-27 22:32:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8077e8ed7fc39f21875953a77b9f149b SHA-1: a41470f9ffd037093867f9a9775a02806947987d SHA-256: 3c15160d5c798d3f492d504a6ba65f85897462cbc7bb1e61e57189f4c28b3cea
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=campbell+biology+chapter+17+study+gu'. This indicates a phishing or social engineering attempt. The document also contains a large number of external links, many hosted on Shopify, which is flagged as a link farm. The primary malicious URL is the most critical IOC.

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=campbell+biology+chapter+17+study+gu
    • http://bivesi.shapiropage.com/uploads/1/3/1/6/131606552/lisomabu.pdf
    • http://files.pieceworkjournals.com/uploads/1/3/1/4/131483371/bipip.pdf
    • http://files.texashollandlops.com/uploads/1/3/1/4/131437233/fokipawobejevexigu.pdf
    • http://files.frandaniellaucerica.com/uploads/1/3/1/4/131453843/61f4f0.pdf
    • https://cdn.shopify.com/s/files/1/0431/6472/9512/files/bouncemasters_mod_apk_android_1.pdf
    • https://cdn.shopify.com/s/files/1/0434/0262/5178/files/esl_prepositions_of_place_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/4678/0566/files/92071941481.pdf
    • https://cdn.shopify.com/s/files/1/0433/0536/9758/files/pufekunegolekikofedubo.pdf
    • https://cdn.shopify.com/s/files/1/0445/7899/6383/files/comparison_paragraph_examples.pdf
    • https://cdn.shopify.com/s/files/1/0433/4862/3510/files/2011_cadillac_cts_coupe.pdf
    • https://cdn.shopify.com/s/files/1/0428/6958/8124/files/pasuxizu.pdf
    • https://cdn.shopify.com/s/files/1/0436/7787/6377/files/49197025427.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/36440623293.pdf
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/xavafesejiramun.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_off000063c9.bin
5310c14a72aadc2578c4da3b539066a22f34fc691e62ea346bd81cfc8055955a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63C9 5764 bytes
font_01_sfnt_off0000774b.bin
f99696211d5180ac9c63d72d0d0ab6e27de12d9aad06ad606bdce7e69f0aa195		 pdf-font-stream PDF embedded font (sfnt) at offset 0x774B 10280 bytes

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