Malicious PDF — malware analysis report

Static analysis result for SHA-256 af97794ee5f4ccf4…

MALICIOUS

PDF

42.8 KB Created: 2020-08-19 07:55:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 508bdcd63c5da55cce3bb4441acaba4f SHA-1: 4957b869a63038661a26a65e6907b9bcaf9bfd0a SHA-256: af97794ee5f4ccf4eed49c2ec959bfc7c4007918d857ae21b1e6d5487dd83db6
120 Risk Score

Malware Insights

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

The PDF document contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=antares+autotune+vst+free++with+crack'. This URL is likely used to lure users into downloading potentially unwanted or malicious software. The document also exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify domains, suggesting an attempt to manipulate search engine results or distribute content broadly. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • 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=antares+autotune+vst+free++with+crack
    • http://files.hempothecary.com/uploads/1/3/0/8/130813588/ronufupuradaxo.pdf
    • http://files.andreab4me.com/uploads/1/3/2/6/132681832/tuluvefatirole.pdf
    • https://cdn.shopify.com/s/files/1/0429/4000/6559/files/fevuzozara.pdf
    • https://cdn.shopify.com/s/files/1/0440/6856/9238/files/camera_moto_x_apk.pdf
    • https://cdn.shopify.com/s/files/1/0432/9806/2501/files/29054572052.pdf
    • https://cdn.shopify.com/s/files/1/0438/5469/2512/files/google_sheets_create_drop_down.pdf
    • https://cdn.shopify.com/s/files/1/0430/7278/2489/files/capsules_definition.pdf
    • https://cdn.shopify.com/s/files/1/0428/8918/3398/files/pobuxujazogepug.pdf
    • https://cdn.shopify.com/s/files/1/0430/8025/3593/files/zunajabileb.pdf
    • https://cdn.shopify.com/s/files/1/0436/5660/9957/files/aws_practice_exam_questions.pdf
    • https://cdn.shopify.com/s/files/1/0436/9268/7513/files/canara_bank_credit_card_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0452/5555/7282/files/60705068031.pdf
    • https://cdn.shopify.com/s/files/1/0433/4921/3349/files/15136784456.pdf
    • https://cdn.shopify.com/s/files/1/0432/0657/4238/files/nixopazetebuled.pdf
    • https://cdn.shopify.com/s/files/1/0450/5151/0936/files/doles.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_off00006a3b.bin
cadd6599b7083b3ddce2750d800edf112fdce0b70a984e62d085c874f56509a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A3B 5140 bytes
font_01_sfnt_off00007bc8.bin
02716e75d889b08e3619ad3d16e603fb510096d86209125b9eefec4190b9502a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC8 10052 bytes

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