Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c47d6ebb456aab9…

MALICIOUS

PDF

41.1 KB Created: 2020-08-23 06:18:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52c31f689439e60843eebe39e4ca94a0 SHA-1: 415056a5c859d81fedd441c0a7ce762ad91b8dfc SHA-256: 1c47d6ebb456aab9dc87a6f196cfc26eb380d1bc54dd2c8ad42685d637285255
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'types of peritoneal dialysis pdf' and the URL itself, suggesting a lure to a malicious site. The presence of a link farm heuristic further supports the malicious intent of distributing links.

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=types+of+peritoneal+dialysis+pdf
    • http://files.shantellsnaturalhair.com/uploads/1/3/1/4/131453494/3035315.pdf
    • https://cdn.shopify.com/s/files/1/0437/4839/3112/files/28242601934.pdf
    • https://cdn.shopify.com/s/files/1/0433/0536/9758/files/dictionary_of_advaita_vedanta.pdf
    • https://cdn.shopify.com/s/files/1/0431/2596/4949/files/retonevulukipirivil.pdf
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/amhran_na_bhfiann_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0436/9324/4570/files/bibolubito.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/atelier_bow_wow_behaviorology.pdf
    • https://cdn.shopify.com/s/files/1/0431/7623/1072/files/77416984206.pdf
    • https://cdn.shopify.com/s/files/1/0441/3367/9256/files/zotiliborekadesifewenezef.pdf
    • https://cdn.shopify.com/s/files/1/0434/4784/5030/files/budget_2020_upsc.pdf
    • https://cdn.shopify.com/s/files/1/0431/2465/4241/files/sixuseweraw.pdf
    • https://cdn.shopify.com/s/files/1/0437/8741/9805/files/dobokavab.pdf
    • https://cdn.shopify.com/s/files/1/0431/8806/0321/files/cours_algorithme_pour_dbutant.pdf
    • https://cdn.shopify.com/s/files/1/0434/5669/2390/files/pirates_of_the_caribbean_piano_sheet.pdf
    • https://medlineplus.gov/dialysis.html
    • 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_off0000621e.bin
da0fec43d067cde9249c4176a5f6abd8894a22fabd20ab542a9f6eb7f033a565		 pdf-font-stream PDF embedded font (sfnt) at offset 0x621E 5088 bytes
font_01_sfnt_off0000737b.bin
af030b3ea7c5d7a0233c802aa291f9761f3dc5757e8b397094f246657bc8e203		 pdf-font-stream PDF embedded font (sfnt) at offset 0x737B 10816 bytes

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