Malicious PDF — malware analysis report

Static analysis result for SHA-256 b36de89ca97f4277…

MALICIOUS

PDF

41.7 KB Created: 2020-08-30 22:43:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: f5a43c40e7ab59d6e99fe7bafc85ef70 SHA-1: 64960147aaa63f5a4b4f069ac33ae92ac8f4516f SHA-256: b36de89ca97f4277c1f1c618eac62c22bf67269fcb7103e38171cea710b69fdf
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 'Dragon Ball' and the malicious URL, suggesting a lure to entice clicks. The presence of numerous other PDF links, many pointing to Shopify, indicates a potential link farm or SEO manipulation tactic to distribute 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=dragon+ball%253A+episode+of+bardock In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1080/8213/files/duvojak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2436/7262/files/lozalosirefirunam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2190/0696/files/quizlet_match_cheat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2710/2887/files/business_intelligence_developer_job_description.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1be480_aa4d3887e7884a378136cfe499e8491b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_02aa42f81d644e0993de17950c2cb1a6.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/43d598_da7a37a0fdf44c4cadc021baa0a7e888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0120/7193/files/lozukibedinuruvuduk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4116/9309/files/video_format_converter_mac_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5495/6695/files/56596840942.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/253000_353d4f3e4bf94f26a37c80c1171dd781.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_1af480fcc1af47368a1a1b341c5fe6cf.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/52b593_384770c8d3874ade893741072d408cce.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_0a111d1e7f6149f59b809816c56ad7a2.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_off000051b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51B8 5376 bytes
SHA-256: ce4235fae3a8d456967e0e7485ca6f2bbbe4e64f0997268656b25ce88f77e834
font_01_sfnt_off00006437.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6437 5576 bytes
SHA-256: edfb7d52f98aa7535053aaf06c74cc558708508859a08263b98b2dbbc26c8344
font_02_sfnt_off00007736.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7736 10084 bytes
SHA-256: 87a33dc8ec186ed7712728158e59fb83c5614cc5bfcd2eaaca9604de9c443406

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