Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f194c995068e9f0…

MALICIOUS

PDF

45.4 KB Created: 2020-08-30 06:54:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7af8e58edd2f26104fce75af5c12a48c SHA-1: 84cb8f7666fa98284d370ca022052da66f15025f SHA-256: 0f194c995068e9f0468eec918df6669faf2518974ba9533bfec9eae7c77f996c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for a malicious redirector link, specifically `https://ttraff.cc/wix?keyword=planet+earth+pole+to+pole+worksheet`. This link is likely used to redirect users to a phishing page or a download site for further malicious payloads. The document also contains a large number of external PDF links, suggesting a link farm or SEO poisoning attempt to drive traffic to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/wix?keyword=planet+earth+pole+to+pole+worksheet
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/99965f_c0837aff378a462db5b3bd5909210aa0.pdf
    • https://static.usrfiles.com/ugd/b8c837_aeb18f452330491bb92938e745fb8d3e.pdf
    • https://static.usrfiles.com/ugd/314c35_fbba2843be7049098c24fe0f841348cd.pdf
    • https://static.usrfiles.com/ugd/b8c837_1aebf2644115421aa3651062f9b44d5f.pdf
    • https://static.usrfiles.com/ugd/ba3095_a1c1032232e74093ad8496f6870361bf.pdf
    • https://static.usrfiles.com/ugd/bd5c68_3dbae716a7de47e2a27cad53115c739e.pdf
    • https://cdn.shopify.com/s/files/1/0437/8234/0770/files/atomic_bomb_dome_information.pdf
    • https://cdn.shopify.com/s/files/1/0437/6772/6232/files/89448370197.pdf
    • https://cdn.shopify.com/s/files/1/0439/4047/9144/files/xeratesikixulemu.pdf
    • https://cdn.shopify.com/s/files/1/0435/7059/3955/files/gurorewojusuvovuzemir.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/36177197864.pdf
    • https://cdn.shopify.com/s/files/1/0458/5845/5705/files/idle_heroes_guide_2019.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005021.bin
aca9a1de161229868554ecad9284a69259401a896e9d23baa55cc2a0f444261b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5021 4804 bytes
font_01_sfnt_off0000606a.bin
4185c298e7a2b5d9deebb4967d7efba34f762afbd2be353ff45457f597cb8134		 pdf-font-stream PDF embedded font (sfnt) at offset 0x606A 10760 bytes
font_02_sfnt_off0000855e.bin
9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x855E 16092 bytes
font_03_sfnt_off00009a25.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A25 4324 bytes

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