Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebe0975755b052fe…

MALICIOUS

PDF

41.0 KB Created: 2020-08-19 06:33:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0ae9222aebed61ca954adbd17b9d43c6 SHA-1: 395cbc7a21fcabf161aaa2d79e293809618a0880 SHA-256: ebe0975755b052fe4a8b5320f078e64c30158ead1483d0f60de8360f157a9316
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to potentially malicious redirectors or are part of a link farm designed to manipulate search engine results. The primary malicious URL identified is https://ttraff.cc/pify?keyword=yakuza+0+cabaret+club+czar+guide, which is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on various domains, suggesting a broad distribution or redirection strategy.

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.cc/pify?keyword=yakuza+0+cabaret+club+czar+guide
    • http://files.creativityandthedivinefeminine.com/uploads/1/3/0/7/130775009/0fff31240.pdf
    • http://miwijek.teajutsu.com/uploads/1/3/1/1/131163635/duvuro.pdf
    • http://files.nnhst2.org/uploads/1/3/1/3/131384401/7511142.pdf
    • http://files.jerseyyachting.co.uk/uploads/1/3/1/4/131453276/rarafope.pdf
    • http://files.winsomephotos.com/uploads/1/3/0/7/130775866/kexodad-jusazukom-jetuvokatokati-tidujiwejedafa.pdf
    • https://cdn.shopify.com/s/files/1/0433/6300/8661/files/attestation_d_hbergement_prefecture_hauts_de_seine.pdf
    • https://cdn.shopify.com/s/files/1/0439/9002/4350/files/tedunanibesev.pdf
    • https://cdn.shopify.com/s/files/1/0431/6987/4080/files/91618247744.pdf
    • https://cdn.shopify.com/s/files/1/0435/6702/2239/files/tafumakogonojis.pdf
    • https://cdn.shopify.com/s/files/1/0431/0741/8273/files/kiwuwodiroteluxa.pdf
    • https://cdn.shopify.com/s/files/1/0433/8106/3838/files/66442022287.pdf
    • https://cdn.shopify.com/s/files/1/0431/5702/9018/files/android_9._1_samsung.pdf
    • https://cdn.shopify.com/s/files/1/0439/3782/4926/files/aeneid_translation.pdf
    • https://cdn.shopify.com/s/files/1/0439/4260/9051/files/stick_fighting_self_defense_bruce_tegner.pdf
    • https://cdn.shopify.com/s/files/1/0430/0128/2719/files/foxfi_full_version_key_apk_crack.pdf
    • https://cdn.shopify.com/s/files/1/0432/6457/3593/files/91463354936.pdf
    • https://cdn.shopify.com/s/files/1/0429/0360/1308/files/android_based_attendance_management_system.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_off000062ce.bin
5853dd490454af04ba7cbf507de4c032b5270f1a232fc4f2960f2c53c7d11164		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62CE 5288 bytes
font_01_sfnt_off000074d2.bin
64aec73b5e5bb105bedc3f2786a6bea96c76039eeb5fa468636740ac04ad4a2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74D2 10004 bytes

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