Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bd86a28e83e8106…

MALICIOUS

PDF

86.1 KB Created: 2021-02-27 16:04:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 57d98178c22b60b82fa317d196075be8 SHA-1: 5655b9b381f4a209a5bea38fd33bacc570134451 SHA-256: 2bd86a28e83e81067f84e1e703d65fa8032820542bf87f631caeb5d18c193a52
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'fokemale.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to fanfiction, aiming to trick users into visiting the malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://fokemale.ru/wix?keyword=jack+frost+x+reader+angst PDF link annotation
    • http://edalovert.xyz/fl_studio_12_free_pluginsax0jo.pdfIn PDF document text
    • http://jofadebujidut.22web.org/us_constitution_with_all_amendments.pdfIn PDF document text
    • https://cdn.sqhk.co/filemowa/jchh0ja/twisted_metal_black_sweet_tooth.pdfIn PDF document text
    • https://cdn.sqhk.co/nudavede/0ghgege/47225506058.pdfIn PDF document text
    • http://palikexifumalam.mywebcommunity.org/fujulaferofakodavedizoka.pdfIn PDF document text
    • https://cdn.sqhk.co/pidefatop/ggjgXP7/75648662863.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/mejifavo/kixaraguremosazetekusat.pdfIn PDF document text
    • https://s3.amazonaws.com/zozofufulolig/xesoji.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/amebiase_intestinal_tratamento.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/animated_cartoon_movies_hd_free.pdfIn PDF document text
    • http://difadedox.rf.gd/grocery_store_sale_flyer_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/46410906323.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e871.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE871 5020 bytes
SHA-256: 7613a60e44af9b91573248569eba9bae3204f7290e7d66e41998faf4971ad655
font_01_sfnt_off0000f984.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF984 1980 bytes
SHA-256: 3f6e32e6b464c954aec6745b9cf49b8cc24a278e9da302d01dd3b6d88e0aa515
font_02_sfnt_off000102ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102EA 10196 bytes
SHA-256: 30b6c1e0b1ad460a95839b5ed7018824775e6b8374cc5dedf89f15bf064d7296
font_03_sfnt_off00012634.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12634 16148 bytes
SHA-256: bf3f822b8bebd85a67cf271bf2afca2e78c23e12d8051960a1c88332fe92ad86
font_04_sfnt_off00013b47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B47 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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