Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ca979e43077673f…

MALICIOUS

PDF

64.2 KB Created: 2020-08-05 09:54:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cf4d6cc2ea9feeb02a7e09a002a3410e SHA-1: d0e24d35aad70b2784945d104621f239b31bd8cc SHA-256: 0ca979e43077673fe9fc0526a5faa6c7196b4c0decf70ae0b2953d636f575e2d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a significant number of embedded links, many of which point to external PDF files, suggesting a link farm or redirection strategy. One critical heuristic identified a link to known malicious redirector infrastructure, indicating an attempt to lead users to harmful sites. The ML classifier also strongly flagged this PDF as malicious.

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.ru/pify?keyword=character+of+a+leader+pdf
    • http://files.care4teeth.org/uploads/1/3/1/0/131070938/7475460.pdf
    • http://files.wolfemountain.com/uploads/1/3/1/6/131636978/fufitosavivodu-lajugigise.pdf
    • http://files.blacksheepcontemporary.com/uploads/1/3/2/6/132695258/japumebon.pdf
    • http://bisazopi.gilmsp.com/uploads/1/3/0/8/130874422/190e34f1b8fe.pdf
    • http://files.vitalfitness.info/uploads/1/3/1/4/131408572/veladezapu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/7089/7824/files/16782601319.pdf
    • https://cdn.shopify.com/s/files/1/0438/1753/3597/files/how_to_be_even_better_manager.pdf
    • https://cdn.shopify.com/s/files/1/0437/7611/4837/files/zaruxawowudesof.pdf
    • https://cdn.shopify.com/s/files/1/0438/2441/4882/files/job_skills_test.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gowaluzefep.pdf
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/90235763288.pdf
    • https://cdn.shopify.com/s/files/1/0439/1777/0920/files/application_format_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/6056/0025/files/ponopolikepevunuve.pdf
    • https://cdn.shopify.com/s/files/1/0434/3794/9090/files/86506396381.pdf
    • https://cdn.shopify.com/s/files/1/0431/8347/2802/files/25423552749.pdf
    • https://cdn.shopify.com/s/files/1/0432/9606/3652/files/6277252978.pdf
    • https://cdn.shopify.com/s/files/1/0433/7929/4358/files/90898088772.pdf
    • https://cdn.shopify.com/s/files/1/0429/8807/7209/files/88499660140.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c0d3.bin
8ccd36840fb2ff5d4890f61160501362dfa38e7dd466219e19bb5b4c07705bd2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC0D3 4968 bytes
font_01_sfnt_off0000d1b0.bin
5f8d46db47b62cf1cb1b8ea60e1fe7f05f1affefd5eab8acab3fcb9710edd99a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD1B0 10036 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.