Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d48b6c1fcfd00ef…

MALICIOUS

PDF

44.7 KB Created: 2020-11-02 18:12:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 55d69a6ac68656e6448e7b070ec6da12 SHA-1: e7a88134b7ac5949c1e7b71adbbc2859c21bc779 SHA-256: 0d48b6c1fcfd00efd0221a63c500ba8c419211ae0b74da79342906aa335d93d3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, disguised as a manual for a KitchenAid vegetable sheet cutter. This suggests a phishing or scam attempt to redirect users to malicious infrastructure. The presence of numerous other PDF links, many pointing to benign Shopify or AWS S3 URLs, indicates a potential link farm or SEO manipulation tactic to improve the ranking of the malicious redirector. No scripts were extracted from this sample.

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://gettraff.ru/123?keyword=kitchenaid+vegetable+sheet+cutter+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369161/normal_5f9ca0cc184e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365551/normal_5f8d564ba4a2b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tizowodifi/23128380781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/4677/1114/files/don_carlton_acura_service.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/4451/9111/files/17528266880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/2277/6006/files/fadipurivabunuguzibogusip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/3549/8949/files/jose_m_hernandez_quotes.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/normal_anatomy_and_physiology_of_the_pancreas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4824/6692/files/ps_ms_200_pomonok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/9473/2703/files/free_iptv_player_apk_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8008/0801/files/kekifurisolesalil.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000617b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x617B 5292 bytes
SHA-256: 10072c0d51740061cb11562d3040c358666c764d9deb4d5cb8cc3b688b074bca
font_01_sfnt_off00007349.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7349 10808 bytes
SHA-256: 22ef7a64124160ca803d2ff58bb7cd995103a0a112b9229e51f7698bffe5afe5
font_02_sfnt_off0000981e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x981E 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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