Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb732e3eb59f7c95…

MALICIOUS

PDF

44.1 KB Created: 2020-08-16 12:40:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 566aa762ed1eeea5f6ea413486eff6a6 SHA-1: 4bda2e045fc849638375c65fef988cb89a073543 SHA-256: cb732e3eb59f7c9526228fb89938fceadb3c77cb71882d79f300abcf5552103b
140 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a scholarship form, which is a common lure for phishing or malware delivery. The document body and heuristics indicate a callback phishing or tech-support scam pattern, further supported by the presence of numerous external links, many pointing to Shopify domains, likely part of an SEO link farm to obscure the malicious redirector. The primary malicious URL is https://ttraff.ru/pify?keyword=up+b.+ed+scholarship+form+2019.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=up+b.+ed+scholarship+form+2019
    • http://files.ezcproductions.com/uploads/1/3/1/3/131398547/e1b0528ad.pdf
    • http://files.robinfarmer.com/uploads/1/3/2/6/132696104/4836073.pdf
    • http://files.annamarieokedesigns.com/uploads/1/3/1/3/131379894/9276894.pdf
    • https://cdn.shopify.com/s/files/1/0430/9444/2137/files/22472745537.pdf
    • https://cdn.shopify.com/s/files/1/0437/4783/6065/files/data_analysis_and_interpretation_in_research_methodology.pdf
    • https://cdn.shopify.com/s/files/1/0430/8821/6217/files/wixutijikepabu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6294/3144/files/46263658601.pdf
    • https://cdn.shopify.com/s/files/1/0431/6528/6549/files/reporter_gene_assays.pdf
    • https://cdn.shopify.com/s/files/1/0435/4464/1695/files/wizugefe.pdf
    • https://cdn.shopify.com/s/files/1/0435/2419/4468/files/98204224279.pdf
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/keluwitewupeguve.pdf
    • https://cdn.shopify.com/s/files/1/0438/3434/3586/files/vodafone_annual_report_2020.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_off00006cac.bin
d03376a00c080e2be2588989be9525971e466512b53a7987adb881c0733b44d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CAC 6040 bytes
font_01_sfnt_off00008110.bin
f6970c305fa669663c6fc0dabb9a48bb2674a83d0826443cb8905f4f1bc5f4df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8110 10196 bytes

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