Malicious PDF — malware analysis report

Static analysis result for SHA-256 e25c401d35c4ac17…

MALICIOUS

PDF

33.8 KB Created: 2020-08-17 09:47:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7132b163766b24a118229840287a4f42 SHA-1: bc44094ff2a78eaaaf1be71ef1bbf6a6be3ea6ec SHA-256: e25c401d35c4ac17390e6ae332ba98f3fd3544f9e19207592bc1d146d61778d7
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.cc/pify?keyword=duval+county+school+calendar+report+cards, which is likely used to direct users to further malicious content. The document body, though heavily obfuscated, contains references to 'duval county school calendar report cards' and the redirector URL, suggesting a lure to trick users into clicking the malicious 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.cc/pify?keyword=duval+county+school+calendar+report+cards
    • http://gutaz.realfauxfinishes.com/uploads/1/3/1/4/131453194/3272644.pdf
    • http://xagibo.choldertonwilts.org.uk/uploads/1/3/0/7/130738705/7878671.pdf
    • http://futifetiw.workwearnorway.com/uploads/1/3/2/3/132303382/segaxodil.pdf
    • https://cdn.shopify.com/s/files/1/0434/2035/2677/files/dustin_diamond_sex_tape.pdf
    • https://cdn.shopify.com/s/files/1/0433/1359/4526/files/93041473572.pdf
    • https://cdn.shopify.com/s/files/1/0434/7048/7712/files/roremizulajaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/5440/7578/files/.pdf
    • https://cdn.shopify.com/s/files/1/0431/1610/1798/files/strength_training_for_triathletes.pdf
    • https://cdn.shopify.com/s/files/1/0435/7835/9967/files/analytics_in_a_big_data_world_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dubisetebezurazoxodo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/mikamer.pdf
    • https://cdn.shopify.com/s/files/1/0435/7164/2527/files/92353628955.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovovowegafakaroseras.pdf
    • https://cdn.shopify.com/s/files/1/0433/6753/0657/files/mijino.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_off000046fd.bin
c5a146a3d2a18b5576856c0eef9debf4738c71d3053052ede37fc8fa01f7f8f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x46FD 5324 bytes
font_01_sfnt_off00005917.bin
f5ead7d6b35f11b4c46dcc25f4196dfb1cb590d101e91a1fb774cd974bfd653b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5917 9760 bytes

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