Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5eef4e9140a43f1…

MALICIOUS

PDF

47.5 KB Created: 2020-08-10 17:16:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b051d4d4d841abdaaa5d9ad2b556845 SHA-1: 6175e85c351a3e80e67a5032b49882811a4484d1 SHA-256: e5eef4e9140a43f10f823144607e441b621364b1f27ab0c3e815aa479c00ff12
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO spam and phishing campaigns. One critical heuristic identified a link to a known malicious redirector, specifically 'https://ttraff.cc/pify?keyword=kalender+2020+niedersachsen+pdf'. The document body also contains this URL, suggesting an attempt to direct users to potentially harmful content under the guise of a calendar. The presence of many Shopify-hosted PDF links further indicates a link farm strategy.

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=kalender+2020+niedersachsen+pdf
    • http://files.ericabender.com/uploads/1/3/1/4/131453194/ladijitagufene.pdf
    • http://files.dhirajrajmotivation.com/uploads/1/3/1/4/131412181/pilagamovosilo.pdf
    • http://mipapifo.laurieleegeorgescu.com/uploads/1/3/1/0/131070152/9295224.pdf
    • https://cdn.shopify.com/s/files/1/0428/2423/7212/files/31436709130.pdf
    • https://cdn.shopify.com/s/files/1/0429/3849/9235/files/xitaxeka.pdf
    • https://cdn.shopify.com/s/files/1/0434/1003/0748/files/16672106165.pdf
    • https://cdn.shopify.com/s/files/1/0436/7053/6345/files/burajogapofubeliwug.pdf
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/black_and_decker_20v_weed_eater_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/9390/8892/files/lovufabemiwavivimigare.pdf
    • https://cdn.shopify.com/s/files/1/0430/0115/1651/files/best_stardew_mods.pdf
    • https://cdn.shopify.com/s/files/1/0429/3391/1705/files/johnson_outboard_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/1977/8723/files/9195563100.pdf
    • https://cdn.shopify.com/s/files/1/0429/3636/9318/files/66943582896.pdf
    • https://cdn.shopify.com/s/files/1/0430/3945/7429/files/john_deere_125_automatic.pdf
    • https://cdn.shopify.com/s/files/1/0431/4556/0225/files/romeo_and_juliet_study_guide_answers.pdf
    • https://cdn.shopify.com/s/files/1/0439/4817/9611/files/10365969254.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_off00006de4.bin
d346e0411f5124d3814b0cc7dfbc19cc8f3ce1a3fb49cb9511be08d9fecc361d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE4 5484 bytes
font_01_sfnt_off00008083.bin
1eb87f1d8a4ab7c1a0bb56e8ab26000ddbc88a4d8f462162e58e5a6d3b425d73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8083 15604 bytes

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