Malicious PDF — malware analysis report

Static analysis result for SHA-256 c32231745f8af3b0…

MALICIOUS

PDF

50.7 KB Created: 2020-08-10 04:48:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8262d3d172b059ca499d379f65f8be37 SHA-1: 7b2db8c67b1a82a195403e335fc1bf3f536b88bb SHA-256: c32231745f8af3b09f2b8ccde4fb1ad8354a48d6769bbc014251af8d8a444c2e
120 Risk Score

Malware Insights

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

The PDF contains a mass link farm, with one critical link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=depression+medication+pdf', suggesting a lure related to medication. This redirector likely leads to a malicious payload or phishing page.

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=depression+medication+pdf
    • http://kujiv.apothecarepharmacies.com/uploads/1/3/2/6/132680813/a4257.pdf
    • http://files.thel14.com/uploads/1/3/1/4/131436956/lewazuxotu.pdf
    • http://files.worldofmouse.com/uploads/1/3/2/7/132741029/1121987.pdf
    • https://cdn.shopify.com/s/files/1/0432/5516/9186/files/16893313456.pdf
    • https://cdn.shopify.com/s/files/1/0436/1447/0302/files/57400715602.pdf
    • https://cdn.shopify.com/s/files/1/0431/3228/9175/files/34733270782.pdf
    • https://cdn.shopify.com/s/files/1/0431/7731/2405/files/adobe_printer_mac.pdf
    • https://cdn.shopify.com/s/files/1/0430/3421/4561/files/organosulfur_compounds.pdf
    • https://cdn.shopify.com/s/files/1/0439/9307/1774/files/70977859051.pdf
    • https://cdn.shopify.com/s/files/1/0432/9000/1572/files/lezaxu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/jogixusamewetirise.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8099/files/62254317630.pdf
    • https://cdn.shopify.com/s/files/1/0437/1460/9305/files/physiology_ak_jain_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65069223210.pdf
    • https://cdn.shopify.com/s/files/1/0435/9156/5471/files/94383684214.pdf
    • https://cdn.shopify.com/s/files/1/0432/6028/0992/files/journal_of_public_policy_implementation.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_off00008965.bin
7338fc6b2fb4d2522991c65d34d48e5a56fa5b48daf255e17a31dff22ea70415		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8965 5268 bytes
font_01_sfnt_off00009b3b.bin
d4066778e72dd466770285fd7d6642ed31a5b1ba1c2a97d5d8ddd310370c5eb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B3B 10316 bytes

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