Malicious PDF — malware analysis report

Static analysis result for SHA-256 540fe34e021353b1…

MALICIOUS

PDF

55.7 KB Created: 2020-08-17 03:08:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ccb80780bb76ca0c6b39d4eb450756e SHA-1: 102afb51e54424c748165c3ce1410ed2563fec8b SHA-256: 540fe34e021353b13c0fcdba829a175c152e74bc50f98cc2598d8f7dffa56aec
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, appears to contain the same malicious URL. This suggests the primary goal is to redirect the user to a malicious site, likely for phishing or to download further payloads. The presence of numerous links, including to benign Shopify URLs, indicates a link farm strategy to improve search engine visibility for malicious content.

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=pope+reforms+catholic+church+marriage+annulment+process
    • http://files.vintageousproductions.com/uploads/1/3/0/7/130738928/vizotupepawimegekup.pdf
    • https://cdn.shopify.com/s/files/1/0437/9679/1456/files/nios_admission_form_2020.pdf
    • https://cdn.shopify.com/s/files/1/0448/1702/3138/files/equation_of_a_circle_worksheet_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/2611/9831/files/nepaxorojozu.pdf
    • https://cdn.shopify.com/s/files/1/0446/6160/4505/files/way_of_the_sun_soul_5e.pdf
    • https://cdn.shopify.com/s/files/1/0428/9455/7351/files/86784628908.pdf
    • https://cdn.shopify.com/s/files/1/0427/7351/2359/files/top_songs_in_the_world.pdf
    • https://cdn.shopify.com/s/files/1/0432/6447/5299/files/man_s_search_for_meaning_summary.pdf
    • https://cdn.shopify.com/s/files/1/0434/5289/1297/files/vapukepisegesibobosefini.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_off00009c8f.bin
e20e969d7a4a1bd1be53f57cfa3cd335a0eaf06fdbed24db317a7b00e0b43f48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C8F 5432 bytes
font_01_sfnt_off0000aedf.bin
4b35eeace59d0eed1f20dc30cd80ce49e2d2f8f1a6d712efd8cd96e832abf7f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAEDF 10208 bytes

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