Malicious PDF — malware analysis report

Static analysis result for SHA-256 097c7c90e81a18e4…

MALICIOUS

PDF

44.1 KB Created: 2020-08-10 05:00:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce1186886b98c2c7df9232f4d175dc22 SHA-1: 361352beaa6f924311c46231cce7b604b424ae8d SHA-256: 097c7c90e81a18e4d7e69fc88a62bfd4c7c145c0448177e97b185c49bb59bddb
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many pointing to external PDF files, which is indicative of a link farm. One of the primary links, 'https://ttraff.cc/pify?keyword=orthographic+to+isometric+pdf', is flagged as a malicious redirector. This suggests the document is designed to lure users into clicking these links, potentially leading to phishing sites or malware downloads.

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=orthographic+to+isometric+pdf
    • http://files.suffah.in/uploads/1/3/1/6/131607943/majota_jodofan_guzatofiwo_vuvuguzimopazi.pdf
    • http://files.ps50q.com/uploads/1/3/1/4/131452811/5927373.pdf
    • http://files.teamkili2020.com/uploads/1/3/1/0/131071157/6030147.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0439/2402/9608/files/72827996088.pdf
    • https://cdn.shopify.com/s/files/1/0440/8174/1976/files/40062199361.pdf
    • https://cdn.shopify.com/s/files/1/0430/4856/6941/files/76332808262.pdf
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/81420917260.pdf
    • https://cdn.shopify.com/s/files/1/0431/5450/5882/files/xigisixikupowititifotit.pdf
    • https://cdn.shopify.com/s/files/1/0448/4133/6989/files/saiva_agamas_english.pdf
    • https://cdn.shopify.com/s/files/1/0431/5653/7495/files/digital_picture_frames_target.pdf
    • https://cdn.shopify.com/s/files/1/0434/1481/4885/files/advanced_candlesticks.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2294/files/zomegegofejuvuvomad.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/tivozagizejujufexetobafal.pdf
    • https://cdn.shopify.com/s/files/1/0432/3452/5352/files/naxiravaxil.pdf
    • https://cdn.shopify.com/s/files/1/0434/1324/2005/files/38574065556.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fa4.bin
efc273c41ad1e37b94448463b08a94cb01c0bc64a4d5d7b750fdba9d3db9a05e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA4 3936 bytes
font_01_sfnt_off00006dcf.bin
62d9faeed4a08862beb82cd1efa6dbe643a6fbeae98381c4f7d8ab2a3aab8686		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DCF 5564 bytes
font_02_sfnt_off00008093.bin
1d9efe5e5d1d6192ddd1f8a1815a5883ae9b22c2874020ef3ae0e99794ae841a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8093 10148 bytes

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