Malicious PDF — malware analysis report

Static analysis result for SHA-256 f75a83a299b8ebe9…

MALICIOUS

PDF

41.3 KB Created: 2020-08-16 23:32:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 18c5abc1f563677f8dc111feef54a9b3 SHA-1: 08a803fa3e3e03bf8c8598e49420481247fdb263 SHA-256: f75a83a299b8ebe9f67d5b16938fa7a85e0e33554c81ed2b9497cd9082f78117
128 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'Mpbou e marksheet' and embeds multiple external links. One critical heuristic indicates a malicious redirector link to 'ttraff.com', suggesting the document's primary purpose is to redirect users to malicious infrastructure. The presence of a visual download button lure further supports a social engineering attack. No scripts were extracted, limiting the analysis of further payload execution.

Heuristics 4

  • 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.
  • 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.com/pify?keyword=mpbou+e+marksheet
    • http://files.salondiversions.com/uploads/1/3/1/4/131437633/7849375.pdf
    • http://files.nevewinter.com/uploads/1/3/1/0/131070866/c2585.pdf
    • http://files.gunmess.com/uploads/1/3/0/8/130814280/30e4a2.pdf
    • http://duguni.guntweaks.com/uploads/1/3/0/7/130776485/5363455.pdf
    • https://cdn.shopify.com/s/files/1/0431/9238/5700/files/76218243395.pdf
    • https://cdn.shopify.com/s/files/1/0432/6657/2452/files/irenaean_theodicy.pdf
    • https://cdn.shopify.com/s/files/1/0428/7715/7542/files/tratamiento_farmacologico_de_la_rinitis_alergica.pdf
    • https://cdn.shopify.com/s/files/1/0432/8528/2980/files/16105501139.pdf
    • https://cdn.shopify.com/s/files/1/0435/5253/8787/files/free_credit_card_statement_template.pdf
    • https://cdn.shopify.com/s/files/1/0429/2021/4681/files/dejike.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/metegemekipezafekude.pdf
    • https://cdn.shopify.com/s/files/1/0436/5156/3670/files/digestion_and_absorption_of_carbohydrates.pdf
    • https://cdn.shopify.com/s/files/1/0433/9132/0229/files/16796912082.pdf
    • https://cdn.shopify.com/s/files/1/0428/7440/5023/files/suzizufokoses.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_off000063c2.bin
49da2be741ca56c694ee007708e9ab1855aebcc726016b4895db72bef082745a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63C2 5236 bytes
font_01_sfnt_off00007563.bin
f5d6f75157842116f308d5c5f4f6d50744b64acf842368f50f8c9634e3a6abeb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7563 10244 bytes

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