Malicious PDF — malware analysis report

Static analysis result for SHA-256 9049e38dfe13d004…

MALICIOUS

PDF

41.4 KB Created: 2020-08-11 22:46:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04be310c81cf3ccd0f67034b516c3813 SHA-1: 84876b579ca5790f2ba4ec446162c9cecd2b247e SHA-256: 9049e38dfe13d004bf74c9e40c8b233d4ab7323250f9bd316a38540b983f2d08
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links, including one pointing to a known malicious redirector at ttraff.ru. This redirector is likely used to funnel victims to further malicious content. The document body, though heavily obfuscated, contains the target URL, suggesting a social engineering lure related to educational materials. The presence of a large number of PDF links, many hosted on Shopify, indicates a link farm used for SEO poisoning or distributing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wb?keyword=millennium%20social%20science%20class%208%20pdf
    • http://bofanimas.whitehousegrill.com/uploads/1/3/1/3/131384635/3953773.pdf
    • http://files.glynelwyn.com/uploads/1/3/0/8/130874162/4732260.pdf
    • http://files.makingmeaninginmissouri.com/uploads/1/3/1/6/131606256/wawuja_musapud_gitubusowejem.pdf
    • http://wuzagok.globalluxeventures.com/uploads/1/3/1/6/131606289/tisozewugewuja-fimegimopuw-xuwulagixitik-rasabim.pdf
    • http://files.krismcg.com/uploads/1/3/1/0/131069832/dd142.pdf
    • https://cdn.shopify.com/s/files/1/0437/4754/1153/files/velezabuxugo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1311/1961/files/tumiguxebezakinosesud.pdf
    • https://cdn.shopify.com/s/files/1/0429/6943/2230/files/ham_radio_lookup.pdf
    • https://cdn.shopify.com/s/files/1/0437/3925/0853/files/sazigodanesepofane.pdf
    • https://cdn.shopify.com/s/files/1/0441/0766/1464/files/weverofod.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9354/files/17937358947.pdf
    • https://cdn.shopify.com/s/files/1/0428/8672/5795/files/74597464958.pdf
    • https://cdn.shopify.com/s/files/1/0433/2548/9305/files/rabega.pdf
    • https://cdn.shopify.com/s/files/1/0435/3907/1130/files/grammar_translation_method.pdf
    • https://cdn.shopify.com/s/files/1/0432/5706/9736/files/little_rock_catholic_study_bible.pdf
    • https://cdn.shopify.com/s/files/1/0432/7692/7134/files/nugesopa.pdf
    • https://cdn.shopify.com/s/files/1/0430/8713/4882/files/9761634828.pdf
    • https://cdn.shopify.com/s/files/1/0433/6130/4728/files/wanefoseruma.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_off00005c1d.bin
892acbf04a47ba2a93cccbcbaaa6ccf5dc792c6e4a4cbdccd6a80e547512d89b
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C1D 5404 bytes
font_01_sfnt_off00006e6e.bin
5f7d5f001acce7757cae4948b8ae8df5b8e7f7aaaf4e75b153eaffa6a532a3cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E6E 13220 bytes