Malicious PDF — malware analysis report

Static analysis result for SHA-256 d42b9bbcae8303bc…

MALICIOUS

PDF

44.6 KB Created: 2020-08-22 04:26:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5edb181d60a3b6fea2faa2f604197d4a SHA-1: 3f27a6c002eb97408e24af5c0448cefe5a1b190c SHA-256: d42b9bbcae8303bc10edcec37021afb6db53cfdb3f1e78c256b1834050cc2360
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of numerous embedded links, a common tactic for distributing malicious content. One critical heuristic flagged a link to known malicious redirector infrastructure, specifically 'https://ttraff.com/pify?keyword=affirming+diversity+sonia+nieto+pdf'. Another critical heuristic indicated a PDF link farm, with the first URL being 'https://cdn.shopify.com/s/files/1/0438/3942/2626/files/backup_chat_whatsapp_dari_android_ke_iphone.pdf'. These findings strongly suggest the document's purpose is to lure users to external, potentially harmful sites.

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=affirming+diversity+sonia+nieto+pdf
    • http://files.cileiaslittlecloset.com/uploads/1/3/1/4/131438616/toxasida.pdf
    • http://tamevugev.nea-salina.org/uploads/1/3/2/6/132683056/rawadofuruje.pdf
    • http://files.michellesmithlaw.com/uploads/1/3/2/8/132814476/3294821.pdf
    • https://cdn.shopify.com/s/files/1/0438/3942/2626/files/backup_chat_whatsapp_dari_android_ke_iphone.pdf
    • https://cdn.shopify.com/s/files/1/0439/3297/5272/files/guwivapov.pdf
    • https://cdn.shopify.com/s/files/1/0436/8610/1145/files/32080051052.pdf
    • https://cdn.shopify.com/s/files/1/0436/5352/9753/files/malejibopifuk.pdf
    • https://cdn.shopify.com/s/files/1/0429/9148/5091/files/xutagererafakuj.pdf
    • https://cdn.shopify.com/s/files/1/0438/9080/2856/files/54495286381.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/loxutiwijadewafulon.pdf
    • https://cdn.shopify.com/s/files/1/0429/2640/7843/files/atal_pension_yojana_form.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_off00006e48.bin
adc6d84ee2450908db2d5f6215d2ecc01a3a9a1275020b4874d2b069ec10a92d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E48 5480 bytes
font_01_sfnt_off000080db.bin
284baa242d224f9b0fae73e8273f73e62e24ccdadfc736d972eb46593a982959		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80DB 10828 bytes

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