Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c937d15a02bf9a0…

MALICIOUS

PDF

40.5 KB Created: 2020-08-24 13:11:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e47e7fb79bfdc0bb7dce7a5e4c2367b SHA-1: a7654b56480306a1d9c49d930ecb1b470ed97062 SHA-256: 7c937d15a02bf9a05140688c9955392040d43860ba641c408ba3dc507eb08d1b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links, one of which, 'https://ttraff.ru/pify?keyword=video+converter+software+free++with+crack', is flagged as a malicious redirector. The document body and heuristics indicate a lure for an advance-fee scam, presenting itself as a software download. The presence of numerous external PDF links suggests a link farm used to manipulate search engine results, potentially to distribute the scam.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=video+converter+software+free++with+crack
    • http://tinaba.carolineheffernanactor.com/uploads/1/3/0/8/130814161/c92865c3.pdf
    • http://files.rycroftlabradors.com/uploads/1/3/2/6/132680813/zisojiva_gorawuzi_rodewatadiwa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/1090/8572/files/fimizipotebudigosotadavov.pdf
    • https://cdn.shopify.com/s/files/1/0463/7599/3505/files/namodevaxup.pdf
    • https://cdn.shopify.com/s/files/1/0433/1179/2286/files/romoluxo.pdf
    • https://cdn.shopify.com/s/files/1/0429/0736/9639/files/tovepasejezilobitada.pdf
    • https://cdn.shopify.com/s/files/1/0435/4929/4756/files/pdf_bhagavad_gita_in_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0435/3572/8794/files/reading_comprehension_worksheet_for_grade_12.pdf
    • https://cdn.shopify.com/s/files/1/0439/2094/9403/files/riteragepelavegatemasu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/peter_handke_justice_for_serbia.pdf
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/danuxoraluzemadisasesul.pdf
    • https://cdn.shopify.com/s/files/1/0434/0511/5544/files/pizeketidotifu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2701/2507/files/print_tensorflow_version.pdf
    • https://cdn.shopify.com/s/files/1/0437/6713/6413/files/pazizikabibimimo.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_off000060f1.bin
ea7fd14fe0afd03b5a59dc65fd659c280c0db641e743769a7148d8bd89bd396e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60F1 5260 bytes
font_01_sfnt_off000072de.bin
a7237f65b90f47164a45662a6434c9a8d0e3f02de6a530209dd40d386ce2716e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72DE 10052 bytes

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