Malicious PDF — malware analysis report

Static analysis result for SHA-256 600ed470555f050d…

MALICIOUS

PDF

226.7 KB Created: 2020-08-08 22:01:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 945d8220d61b55d1836f550e56b555e6 SHA-1: 5ddb9464297367ee07b1204864d359fd192cc595 SHA-256: 600ed470555f050d22683a81d2559665d167c66929d1f637e7b806967c699e4e
94 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious and contains a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL which appears to be a lure related to a musical score. The presence of a malicious link strongly suggests an attempt to redirect the user to a harmful site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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.
  • 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.ru/pify?keyword=bwv+552+organ+pdf
    • http://files.apolloartists.net/uploads/1/3/0/7/130776500/14c4f9b9e.pdf
    • http://files.bestcraneschool.com/uploads/1/3/1/6/131607043/vikabu.pdf
    • http://files.southwestchristianchurch.org/uploads/1/3/2/6/132681725/xidil_wuvilisolisuzag_mesolawo.pdf
    • http://favavidiv.momonachico.com/uploads/1/3/1/8/131856257/dacad1a96fa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/9679/3503/files/vemibaxixuzoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/5721/6678/files/rumoxifupo.pdf
    • https://cdn.shopify.com/s/files/1/0435/1731/3178/files/dokol.pdf
    • https://cdn.shopify.com/s/files/1/0433/6353/2951/files/13889428730.pdf
    • https://cdn.shopify.com/s/files/1/0431/8937/1029/files/bilelematewatafodaxe.pdf
    • https://cdn.shopify.com/s/files/1/0449/1457/3467/files/caged_bird_poem_maya_angelou.pdf
    • https://cdn.shopify.com/s/files/1/0431/6472/9512/files/zidomavot.pdf
    • https://cdn.shopify.com/s/files/1/0434/0056/0803/files/95359221579.pdf
    • https://cdn.shopify.com/s/files/1/0433/1362/7294/files/sumepo.pdf
    • https://cdn.shopify.com/s/files/1/0437/3214/0186/files/1816934974.pdf
    • https://cdn.shopify.com/s/files/1/0428/9950/5311/files/55721490449.pdf
    • https://cdn.shopify.com/s/files/1/0431/0636/9703/files/94881111834.pdf
    • https://cdn.shopify.com/s/files/1/0434/3165/7638/files/barolenugejewifiturixewi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00032468.bin
749ac1f955a766d5e9b8b4176fc605aee0bdf6589ad145f17668417b2dd52425
pdf-font-stream PDF embedded font (sfnt) at offset 0x32468 5456 bytes
font_01_sfnt_off00033733.bin
2011962df763b50e8a635531ff8540501072036e7d6cdfbe81164c14bd299598
pdf-font-stream PDF embedded font (sfnt) at offset 0x33733 15436 bytes
font_02_sfnt_off00036731.bin
eb8728b209634f5cf0dcbccd801eedbe8bc3f4553844c4955f61b377f7da468a
pdf-font-stream PDF embedded font (sfnt) at offset 0x36731 16200 bytes