Malicious PDF — malware analysis report

Static analysis result for SHA-256 481e935cceaed526…

MALICIOUS

PDF

37.4 KB Created: 2020-08-14 22:29:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e180923ccfd01b3b0422a3098fbf87f SHA-1: f39ea30fdad6f45d95135fdc63c711c3bda39413 SHA-256: 481e935cceaed526231c1b519fba7377098a3a94ae49f6fe760682aa58348f80
120 Risk Score

Malware Insights

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

The PDF contains a deceptive title 'Logo quiz all answers level 4' and embeds a link that redirects to malicious infrastructure. This indicates a phishing or social engineering attack aimed at tricking users into visiting a harmful site. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious content. No scripts were extracted, limiting the analysis of further payload delivery mechanisms.

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.cc/pify?keyword=logo+quiz+all+answers+level+4
    • http://files.friesenfruits.com/uploads/1/3/0/8/130874238/gojazu.pdf
    • http://files.famhealth.com/uploads/1/3/1/4/131409861/wokidomap-gavudugutib-sigexavokun.pdf
    • https://cdn.shopify.com/s/files/1/0429/2047/6828/files/gefamibinokovebofifaw.pdf
    • https://cdn.shopify.com/s/files/1/0434/3182/1468/files/biomedical_waste_management_in_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0437/0097/7816/files/70914876807.pdf
    • https://cdn.shopify.com/s/files/1/0434/2182/7239/files/admonitions_of_st_francis.pdf
    • https://cdn.shopify.com/s/files/1/0433/5265/3973/files/ehsas_program.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2791/files/calendario_serie_d_girone_d_2020_19.pdf
    • https://cdn.shopify.com/s/files/1/0430/2969/2577/files/gonadorapamakitubog.pdf
    • https://cdn.shopify.com/s/files/1/0434/4230/7239/files/62052812532.pdf
    • https://cdn.shopify.com/s/files/1/0430/0010/3071/files/54861776004.pdf
    • https://cdn.shopify.com/s/files/1/0434/1507/7022/files/agitator_design_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0430/6737/5770/files/zupexotavidowudasanu.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_off000053ed.bin
59dc98c8d97b38f7f729a7516125fe0a50bc548db077105a7e800159304064ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53ED 5212 bytes
font_01_sfnt_off000065dd.bin
4fcda76b5b578e854b45acf007c06da125ca32d2bf5e7ca32215ffe0823b0381		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65DD 10316 bytes

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