Malicious PDF — malware analysis report

Static analysis result for SHA-256 980ac3d67f3b5146…

MALICIOUS

PDF

60.3 KB Created: 2020-08-14 02:49:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb192d832edd7c3817b207aa2968ba3b SHA-1: 3f40dc15612285c1e5c8724ecde682b8730a13ff SHA-256: 980ac3d67f3b51462fbffe31ad9c73df24d51aaad258abbbf5db0af4486a2bae
152 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The embedded URL 'https://ttraff.cc/pify?keyword=split%2528+2016+american+film+free' is identified as a malicious redirector. The document also contains numerous links to Shopify-hosted PDFs, suggesting an attempt to leverage legitimate platforms for SEO poisoning or 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.cc/pify?keyword=split%2528+2016+american+film+free
    • http://files.glenswanson.space/uploads/1/3/0/9/130969418/kuragewe.pdf
    • http://files.sevenstarsselfcatering.co.uk/uploads/1/3/1/3/131379552/4308544.pdf
    • http://files.pit-p.com/uploads/1/3/0/9/130969080/6811b53842530.pdf
    • https://cdn.shopify.com/s/files/1/0435/6921/7699/files/partnership_deed_format_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/8642/0891/files/analytical_method_validation_interview_questions.pdf
    • https://cdn.shopify.com/s/files/1/0434/9755/4084/files/16226184124.pdf
    • https://cdn.shopify.com/s/files/1/0434/8447/9641/files/adverb_clause_of_concession.pdf
    • https://cdn.shopify.com/s/files/1/0437/9095/8752/files/naming_aldehydes_and_ketones_practice_problems.pdf
    • https://cdn.shopify.com/s/files/1/0433/4023/4902/files/vidotupezalipijukulup.pdf
    • https://cdn.shopify.com/s/files/1/0437/9849/5389/files/xabutubutujutagaxifimodu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0319/9138/files/zebowizar.pdf
    • https://cdn.shopify.com/s/files/1/0430/4440/5397/files/xuzaxepu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9959/4656/files/91744507676.pdf
    • https://cdn.shopify.com/s/files/1/0437/6412/1752/files/33105065077.pdf
    • https://cdn.shopify.com/s/files/1/0437/8922/2045/files/54787008669.pdf
    • https://cdn.shopify.com/s/files/1/0431/4952/5149/files/truman_capote_breakfast_at_tiffany_s.pdf
    • https://cdn.shopify.com/s/files/1/0433/0084/7781/files/zawevivepe.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_off0000ab12.bin
a6b28be570ce5ec7c908e61c334dadd4f713a7a122229e1773032b5c07d3fac4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB12 5644 bytes
font_01_sfnt_off0000be33.bin
ad08a9fa2bf90a8984712413b01a3886ac7c97862f68fee55ee6804f8aea4515		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBE33 11148 bytes

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