Malicious PDF — malware analysis report

Static analysis result for SHA-256 01fb142e1f8abb2d…

MALICIOUS

PDF

49.4 KB Created: 2020-09-17 13:18:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a956e5d75e8f6aaa67d235caf0b12bf SHA-1: 87e464529c92924ccffbb16bc3b9f21b220e857c SHA-256: 01fb142e1f8abb2d3539aa4391986f3938d7b3dc2f864cc4c885053e9a3c4501
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links, many of which point to link farms hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, suggesting an attempt to lead the user to a malicious site. The document body, though partially corrupted, contains a URL that appears to be part of this malicious infrastructure.

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.link/wix?keyword=medidas+de+cancha+de+voleibol+profesional
    • http://sajamu.humboldtmutualaid.org/uploads/1/3/1/4/131453301/5860628.pdf
    • http://xemaluwod.nigelbeebe.com/uploads/1/3/2/8/132814930/4084935.pdf
    • http://files.banyantreesamui-cuisine.com/uploads/1/3/1/6/131606666/jeloritazido.pdf
    • http://files.leviteministry.com/uploads/1/3/2/7/132741064/8440347.pdf
    • http://files.blackwomensdayofmeditation.com/uploads/1/3/0/7/130739510/6026420.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/0510/8636/files/intel_bluetooth_driver_windows.pdf
    • https://cdn.shopify.com/s/files/1/0482/5379/6506/files/26225278945.pdf
    • https://cdn.shopify.com/s/files/1/0432/7089/7824/files/34018613388.pdf
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/gsm_module_sim900a_mini_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0463/1166/9917/files/boldogsg_mint_versenyelny.pdf
    • https://cdn.shopify.com/s/files/1/0435/8209/5517/files/70089698226.pdf
    • https://cdn.shopify.com/s/files/1/0434/4456/8216/files/awas_yojana_online_form_bharna.pdf
    • https://cdn.shopify.com/s/files/1/0432/3311/6317/files/jokenoxuxugetubi.pdf
    • https://cdn.shopify.com/s/files/1/0438/4204/4066/files/jiwak.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_off00005fc1.bin
1f6c728a17d2eb11d13eb725566fd89b1b0d45cb25923177c2f72424633dd0dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC1 5448 bytes
font_01_sfnt_off00007247.bin
f17d6b56fd8e78bc478b68c698a3110284aa3e31b57c9b967fcbad1a223eaed1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7247 2548 bytes
font_02_sfnt_off00007d31.bin
32cce075b0bda6bd53520289feb94d936deefce84dffe81a38fe3e01d08c7e38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D31 10776 bytes
font_03_sfnt_off0000a061.bin
684a3c196e802b4dc45ee85e0d12f41c83d6b6c6a55a83cec5fb8e332ee9aa36		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA061 16376 bytes

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