Malicious PDF — malware analysis report

Static analysis result for SHA-256 4634922cc6b3fd63…

MALICIOUS

PDF

68.0 KB Created: 2020-08-11 05:50:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 13679dbad92e95c3c534c4b5d99fef95 SHA-1: 66d31f9ab4556eaad1ef1fe41ca01f0550c07e92 SHA-256: 4634922cc6b3fd63a46dd5f94cf095102bd6132a51a9bc2b5e5f461bc9787cf7
136 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link disguised as a download button, aiming to lure users to a malicious site. The document body and heuristics indicate a social engineering attempt using urgency and a call-to-action. The primary IOC is the malicious redirector URL found in the document.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=best+pdf+to+word+converter+software+2020
    • http://files.genxtraining.ca/uploads/1/3/0/8/130813923/a79feccb70.pdf
    • http://files.casting4growth.com/uploads/1/3/2/3/132302759/retotanebap-nefimusegik-japefotasi.pdf
    • http://tavegovab.yurrugar.com/uploads/1/3/2/6/132681513/5457839.pdf
    • http://files.tacomasoutsidersguide.com/uploads/1/3/1/3/131379382/8703183.pdf
    • http://files.kelleyintegrity.com/uploads/1/3/1/4/131483372/xovexogu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6187/8687/files/66365682414.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/cake_recipes_sinhala_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/3135/5807/files/52761823195.pdf
    • https://cdn.shopify.com/s/files/1/0427/5005/0460/files/fapepuku.pdf
    • https://cdn.shopify.com/s/files/1/0434/8687/1712/files/psc_bulletin_10000_gk.pdf
    • https://cdn.shopify.com/s/files/1/0438/4358/4162/files/catapult_physics.pdf
    • https://cdn.shopify.com/s/files/1/0437/7346/0631/files/42890313788.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/keto_diet_recipes.pdf
    • https://cdn.shopify.com/s/files/1/0431/1403/7397/files/7857722523.pdf
    • https://cdn.shopify.com/s/files/1/0430/5505/5002/files/64573305888.pdf
    • https://cdn.shopify.com/s/files/1/0430/7176/6690/files/89054136965.pdf
    • https://cdn.shopify.com/s/files/1/0439/4264/1832/files/asia_political_map_hd.pdf
    • https://cdn.shopify.com/s/files/1/0435/9703/7730/files/probability_generating_function.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/59022585862.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009a1b.bin
127b44c9f93874c96d25eb7ddc4688780d8877ce931cf296363fb5748d8d514b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A1B 6744 bytes
font_01_sfnt_off0000ab02.bin
159ed0f0d7f93680e8b51a8558c61d7099cf37bcbd1fa861eb99cd6b9a58d5cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB02 5592 bytes
font_02_sfnt_off0000be28.bin
7fdbe5f08dfe0268db4b66012229d82a1bd59577a10b914e6ad2059dd38d94e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBE28 2208 bytes
font_03_sfnt_off0000c834.bin
6735fcb8febedb24ffbd337a752a64c29d84f55a9b22b4d7c8fb9fb0fdc8317a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC834 10544 bytes
font_04_sfnt_off0000ec79.bin
35d3440dae1ebc896564e4e6f70ea95aa3a30a1ac603c7fffbb21b68b8b72e2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC79 16036 bytes

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