Malicious PDF — malware analysis report

Static analysis result for SHA-256 258282fdb84fdb41…

MALICIOUS

PDF

91.8 KB Created: 2021-03-13 18:06:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a96088c69f20a409bfeac27edfafd13a SHA-1: 597b51e30ed0b3db6b4e63e9a436afab11b11c18 SHA-256: 258282fdb84fdb419bdc3058fce17d33b18db9061fdeb1c76a3017d8d9742e0e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, suggests a lure related to social media content, likely intended to trick the user into visiting the malicious URL.

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://maypoin.ru/123?utm_term=video+er+for+instagram+and+facebook PDF link annotation
    • https://cdn.sqhk.co/kelanadu/gwzjeZV/fire_and_water_together.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379038/normal_5fc5a48a59298.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417998/normal_60188ed6ef48d.pdfIn PDF document text
    • https://cdn.sqhk.co/guvevifowo/IlgZ6gd/xujeluwifebalolilela.pdfIn PDF document text
    • http://maxoranano.sportsontheweb.net/woxudoroxumadara.pdfIn PDF document text
    • https://cdn.sqhk.co/vakenuda/aw5ghgf/67979780680.pdfIn PDF document text
    • https://cdn.sqhk.co/nusekabe/Wjd3eid/21250853259.pdfIn PDF document text
    • https://cdn.sqhk.co/gapalagabig/tjfhaqR/backgrounds_wallpapers_hd_windows_10.pdfIn PDF document text
    • https://cdn.sqhk.co/peporewav/heiahfe/cafe_tycoon_cooking_restaurant_simulation_game.pdfIn PDF document text
    • http://vakiduweg.mygamesonline.org/2006_bmw_3_series_owners_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/zodozane/cghTexI/messenger_rna_vaccine_platform_technology.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372702/normal_60150b0f6b91e.pdfIn PDF document text
    • https://cdn.sqhk.co/kajurineg/hblrwDe/the_game_of_life_app_for_android_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lewuli/55401219967.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/dawub.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/gajizon.pdfIn PDF document text
    • http://gupizamowakop.myartsonline.com/lyrics_lukas_graham_-_7_years_traduo.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/energie_non_renouvelable_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/rurosaveruk/2008452331.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/navura.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/lonipogodinofeso.pdfIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/earthwise_lawn_mower_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/bowtech_diamond_razor_edge_draw_length_adjustment.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012505.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12505 5480 bytes
SHA-256: 96bf6b3cf39537b70ea98718ae2f0d22ab590f4445d7d5cbd11986ed2f57a66d
font_01_sfnt_off0001379d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1379D 12868 bytes
SHA-256: 6d7051ff5f25265e0935b7db6e88f563cbd5acf45093096aca4050edfa7b575f

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