Malicious PDF — malware analysis report

Static analysis result for SHA-256 705b94131efc2f0a…

MALICIOUS

PDF

76.7 KB Created: 2020-12-25 02:08:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: a56da46cf59b6510cbf9d7df781ce53f SHA-1: be85cbc09acca7499326050bb5b00afb2080e7ce SHA-256: 705b94131efc2f0adbd1df968b23009aea22ce6468b6124318489e2bcc5c4302
214 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, including a known malicious redirector and a link farm, suggesting an attempt to drive traffic to malicious content. The embedded document body, though heavily obfuscated, contains text related to 'Mod morph minecraft 1. 16 1', indicating a lure to attract users interested in Minecraft. The ClamAV detection and ML classifier further support its malicious nature, likely as a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffking.ru/strik?utm_term=mod+morph+minecraft+1.+16+1 In PDF document text
    • https://fategebedabeno.weebly.com/uploads/1/3/4/7/134718848/bcb576e4.pdfIn PDF document text
    • https://cdn.sqhk.co/gutemokerezo/hiazVic/other_celestial_bodies_in_our_solar_system.pdfIn PDF document text
    • https://cdn.sqhk.co/zibusisujij/jeVjcEa/72977466073.pdfIn PDF document text
    • https://fidevawane.weebly.com/uploads/1/3/0/8/130814252/83e0b4f18.pdfIn PDF document text
    • https://cdn.sqhk.co/suwezuzifu/DyTjgnn/phoenix_weather_october_average.pdfIn PDF document text
    • https://kewojuposadut.weebly.com/uploads/1/3/4/3/134374438/jivor.pdfIn PDF document text
    • https://segawalapuk.weebly.com/uploads/1/3/4/9/134902876/waruzupeba.pdfIn PDF document text
    • https://modsfire.download/morph.htmlIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jolufozo/mustapha_mond_quotes_in_brave_new_world.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/wedding_couple_dance_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sefabe/free_android_emulators_for_pc_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/jesapuzutijujunolepi.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC08 5428 bytes
SHA-256: 70a6263b54fec8c769d803fa944fd7f619dfdbe3ab146bc4f02131bb7810ac21
font_01_sfnt_off0000de62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE62 2364 bytes
SHA-256: 5beb51794df48151c782d54d09b970c5b66fd19149d4aa09c5412a6e191c4d37
font_02_sfnt_off0000e942.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE942 11644 bytes
SHA-256: d3b20d6e7dadd43ea4510e98bc5fa6bf7ecf0ea8ac59aee014b46ccacaefb3d6
font_03_sfnt_off000110db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110DB 16076 bytes
SHA-256: 1572f1bef06e94643c552f70f3ef07ecee9bf7de88dacbdbabe2fa1db5c51cc3

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