Malicious PDF — malware analysis report

Static analysis result for SHA-256 7966e7605c67b5b6…

MALICIOUS

PDF

72.8 KB Created: 2020-08-06 23:31:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67912284a25929b5a09d41d179cd18d3 SHA-1: c09fc67273a65781d6a38453a4fd32c8080cd4e0 SHA-256: 7966e7605c67b5b6f3304478f5405edf393ec44f100ebb08f29ed8752bb06d03
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links, one of which points to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=adrenergic+antagonist+pdf'. The document body, though heavily obfuscated, contains text fragments that suggest a lure related to 'adrenergic antagonist pdf'. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm or SEO manipulation tactic, likely to obscure the malicious redirector.

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=adrenergic+antagonist+pdf
    • http://files.healthydancercanada.org/uploads/1/3/0/8/130813887/lapudago_vimilowibin_raxejikideru_gatifep.pdf
    • http://files.woodfielddoc.com/uploads/1/3/1/3/131398406/e9d991337.pdf
    • http://files.kbea.org/uploads/1/3/0/7/130740017/zogigido_milinelufilatip_tuzagaxu.pdf
    • http://files.capitalmusicireland.org/uploads/1/3/1/8/131856860/d05abf9a8a3a65.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/0406/0071/files/72631963396.pdf
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/giredodefuloxazito.pdf
    • https://cdn.shopify.com/s/files/1/0433/6323/8056/files/80022231932.pdf
    • https://cdn.shopify.com/s/files/1/0433/1647/8110/files/8074135966.pdf
    • https://cdn.shopify.com/s/files/1/0428/4055/5676/files/vatepemalidaze.pdf
    • https://cdn.shopify.com/s/files/1/0438/1310/9917/files/14892626786.pdf
    • https://cdn.shopify.com/s/files/1/0443/3536/6300/files/warhammer_zbrojownia_starego_wiata.pdf
    • https://cdn.shopify.com/s/files/1/0432/8783/8886/files/13747264407.pdf
    • https://cdn.shopify.com/s/files/1/0430/9054/2743/files/livilaganixiw.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gizazuvolabemonixodokij.pdf
    • https://cdn.shopify.com/s/files/1/0433/8037/5715/files/xubatarejekedotab.pdf
    • https://cdn.shopify.com/s/files/1/0437/7149/4554/files/chemical_reaction_engineering_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/1987/7024/files/wokulevijuremazufexafidax.pdf
    • https://cdn.shopify.com/s/files/1/0439/0954/6136/files/buvebagezetuloribolun.pdf
    • https://cdn.shopify.com/s/files/1/0433/6317/2502/files/zaburelofobikodutinatudap.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_off0000dc47.bin
5173df49c94727e0c6a6d5fea9e0180c92c6c8c68c95e724d9f87627712fe036		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC47 5280 bytes
font_01_sfnt_off0000ee50.bin
6241017113baf3a0e82fb5705a32abc35abdd00b399025bb18af56c72af6404d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE50 12248 bytes

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