Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d9bfed8da9e941c…

MALICIOUS

PDF

69.4 KB Created: 2020-08-15 22:43:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03ba8be6a22f4e251d081a8815de3027 SHA-1: 6eece94878c819c67a7a5e2c891bdd20ff460e34 SHA-256: 0d9bfed8da9e941ce7246404b1cb24241d284d29f4f3252adea040b65f8d18b2
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to a link farm designed to generate SEO traffic. One prominent link, disguised as a 'goal setting worksheet', redirects to a malicious URL on 'ttraff.com'. This suggests a phishing or scam attempt, likely to lead the user to a compromised site or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=goal+setting+worksheet+for+students+pdf
    • http://babugune.ericaboydwhite.com/uploads/1/3/0/9/130969352/xiwobegetimuzak.pdf
    • http://files.blueribbonhb.com/uploads/1/3/1/1/131164198/kajirefilade.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/beneruweleretabi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4669/0203/files/xotobariradakebofatiluwa.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/lanak.pdf
    • https://cdn.shopify.com/s/files/1/0438/7205/9547/files/33237863965.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7293/files/fukujidenam.pdf
    • https://cdn.shopify.com/s/files/1/0434/5911/7222/files/varudubu.pdf
    • https://cdn.shopify.com/s/files/1/0435/0086/3643/files/charlie_wilson_s_war_dual_audio.pdf
    • https://cdn.shopify.com/s/files/1/0434/2225/3208/files/allahabad_high_court_aro_answer_key_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/0412/5599/files/26201007467.pdf
    • https://cdn.shopify.com/s/files/1/0430/2913/5514/files/4243025920.pdf
    • https://cdn.shopify.com/s/files/1/0430/6088/7705/files/lupitujulalomaroxanufag.pdf
    • https://cdn.shopify.com/s/files/1/0433/9495/7475/files/nrp_guidelines_2017.pdf
    • https://cdn.shopify.com/s/files/1/0431/5653/7505/files/89179603873.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d175.bin
eb1e91120bb32f7d5fd3424029bc854c9a0299e47bb923bdb30a2942c3b92f8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD175 5488 bytes
font_01_sfnt_off0000e433.bin
c8efd98e1d26beb84a967fc109b0362360a515e81c0d0c315402aa712d162bec		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE433 10656 bytes

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