Malicious PDF — malware analysis report

Static analysis result for SHA-256 54a577c01c0fea6e…

MALICIOUS

PDF

35.0 KB Created: 2020-08-21 19:30:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42612f694ac1de94286c52e83a4f4c62 SHA-1: 09f939c5116f891a3a862bc74b004fada4988a44 SHA-256: 54a577c01c0fea6ea8858d65ced80a29488cdc88d6078339107faf39a2b9661c
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to external resources, indicating a link farm or redirection attempt. One critical heuristic firing identified a link to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=albinoni+adagio+organ+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous Shopify URLs, some confirmed benign and others unknown, likely serves to camouflage the malicious link within a larger set of seemingly legitimate or less suspicious resources.

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=albinoni+adagio+organ+pdf
    • http://files.integritysportsdfw.com/uploads/1/3/0/7/130738657/9816e037.pdf
    • http://sonuwa.sonyaparra.com/uploads/1/3/0/7/130775478/burunazabizosukaxiv.pdf
    • http://files.cavingintocuriosity.com/uploads/1/3/0/7/130775498/noxaj-kelokujirak-toduf.pdf
    • http://mededaw.senseinelsonius.com/uploads/1/3/0/8/130874317/7113535.pdf
    • http://files.cogcomp.com/uploads/1/3/2/6/132682966/venup-dezoxajawes-zetefepujumum.pdf
    • https://cdn.shopify.com/s/files/1/0430/3729/4745/files/mibuweranulujusuris.pdf
    • https://cdn.shopify.com/s/files/1/0430/7868/0727/files/57087571876.pdf
    • https://cdn.shopify.com/s/files/1/0429/0691/0876/files/pigasatumarogubiles.pdf
    • https://cdn.shopify.com/s/files/1/0438/0491/7917/files/architecture_books_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/3077/2901/files/rarutorepowekotu.pdf
    • https://cdn.shopify.com/s/files/1/0436/4537/0518/files/3847880123.pdf
    • https://cdn.shopify.com/s/files/1/0434/2156/5084/files/bible_study_lessons_for_young_adults.pdf
    • https://cdn.shopify.com/s/files/1/0436/8600/2838/files/lojelonisupaxakinevodame.pdf
    • https://cdn.shopify.com/s/files/1/0430/1219/4463/files/nifunojo.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_off00004c03.bin
1ffe39cf0cb1da9f7963d5e62692fdb302776c241c0eb2cc02adcf96b65d2308		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C03 5160 bytes
font_01_sfnt_off00005d93.bin
4ab21260e5250cb8ea2be58712f059d02e75d0dc2acb71f154f756d9da30e127		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D93 9840 bytes

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