Malicious PDF — malware analysis report

Static analysis result for SHA-256 33ee9cfba73d8be2…

MALICIOUS

PDF

37.7 KB Created: 2020-08-29 16:39:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1447cb68f8757275994e4253a19de581 SHA-1: d8731404459e84d8d2fad61805ec2999dec830c2 SHA-256: 33ee9cfba73d8be2db8e3bc3078b98d353f391591846f2e1aaed4ddfb771fd06
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains text related to a 'movie guide worksheet' and the malicious URL, suggesting a social engineering lure. The presence of numerous Shopify links, while mostly benign, contributes to a link farm pattern, potentially to improve SEO for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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/wix?keyword=the+butler+movie+guide+worksheet+ans
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/7341/4055/files/55210701365.pdf
    • https://cdn.shopify.com/s/files/1/0431/4431/5041/files/zizupivup.pdf
    • https://cdn.shopify.com/s/files/1/0432/1712/5544/files/agglutination_and_precipitation.pdf
    • https://cdn.shopify.com/s/files/1/0431/0558/3266/files/movies_for_mobile_sites.pdf
    • https://cdn.shopify.com/s/files/1/0439/9644/6878/files/81598123885.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3106/files/baresapolumulu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9289/3093/files/xitozet.pdf
    • https://cdn.shopify.com/s/files/1/0436/4694/3392/files/past_simple_exercises_agenda_web.pdf
    • https://cdn.shopify.com/s/files/1/0431/5771/7152/files/ridebomolezimomupo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7414/files/72622635096.pdf
    • https://cdn.shopify.com/s/files/1/0427/7973/8278/files/make_outlook_distribution_list_from_excel_spreadsheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/3349/3658/files/camry_2013_hybrid_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/digital_electronics_fundamental_concepts.pdf
    • https://cdn.shopify.com/s/files/1/0436/6116/4697/files/elementary_statistics_triola_12th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0450/6225/8851/files/talaw.pdf
    • https://cdn.shopify.com/s/files/1/0440/7122/3446/files/xibafesatezosirogotow.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_off00005370.bin
efc362d611f758d8f2172d6e2e5791b1a1b2be49667383a4bc60f1627dfa7283		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5370 5544 bytes
font_01_sfnt_off0000663e.bin
b80699f559e369f09f1578c09b51ad3c4f86e043cd07a983a43a492c25560ee0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x663E 10440 bytes

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