Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a0daaa9998626ae…

MALICIOUS

PDF

60.2 KB Created: 2020-08-11 23:00:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c54b452fd1b40413f2707a22cc9f456 SHA-1: 5b51904fa186ab249222510a83c11fb141526346 SHA-256: 0a0daaa9998626ae084c271658389646b769f4e52924183140540e78a697db8e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains a URL that mirrors the malicious redirector. This suggests the PDF is designed to distribute malware or phish credentials by directing users to malicious websites.

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.com/pify?keyword=abramelin+the+mage+book+pdf
    • http://files.hsc3knives.com/uploads/1/3/0/9/130969243/a00465f049b.pdf
    • http://files.evangelistictempleofiam.net/uploads/1/3/1/4/131409794/sebetakuf.pdf
    • http://files.livetinyandtravel.com/uploads/1/3/2/7/132741029/puzer.pdf
    • http://tojosuna.jamesdeanartifacts.com/uploads/1/3/1/0/131070374/c3e067dbfd.pdf
    • http://files.buyandsellwithcascade.com/uploads/1/3/1/8/131857305/ximova.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/11645936603.pdf
    • https://cdn.shopify.com/s/files/1/0430/0003/7527/files/attendance_certificate_format_for_students.pdf
    • https://cdn.shopify.com/s/files/1/0434/5180/9957/files/vogiw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96951977507.pdf
    • https://cdn.shopify.com/s/files/1/0431/8383/3249/files/advanced_sociological_theories.pdf
    • https://cdn.shopify.com/s/files/1/0439/5424/1694/files/segamikewizexepar.pdf
    • https://cdn.shopify.com/s/files/1/0434/6360/6429/files/73204302971.pdf
    • https://cdn.shopify.com/s/files/1/0431/5083/5878/files/92824834399.pdf
    • https://cdn.shopify.com/s/files/1/0437/3679/3237/files/biotic_and_abiotic_factors_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/5802/7928/files/sewaxi.pdf
    • https://cdn.shopify.com/s/files/1/0448/3586/4736/files/baixar_em_iphone.pdf
    • https://cdn.shopify.com/s/files/1/0432/2754/5755/files/pazesaribumenedifidubofaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/5670/9288/files/76629714634.pdf
    • https://cdn.shopify.com/s/files/1/0433/6871/0309/files/rasojimubusumapimaxino.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_off00008667.bin
915acccf756e4ec9701f1b4d865134a4eb02212df65a38fda174a1befcd4231e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8667 5256 bytes
font_01_sfnt_off0000980c.bin
2329ef54bb123804c6312695d76d7850fd83b960025341f68127fe28c67e55bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x980C 11652 bytes
font_02_sfnt_off0000c024.bin
51b8d4c4f17389d80b23040d591c0dccb099bca9103ea84f58116e310badbe13		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC024 16088 bytes
font_03_sfnt_off0000d4dc.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD4DC 4324 bytes

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