Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1eea50d4977e8d5…

MALICIOUS

PDF

78.2 KB Created: 2021-03-20 04:21:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f82073dd0f425e606482bbbb7f006bb0 SHA-1: e8ea18476dbbfa46da948a0da9aa2f297c902593 SHA-256: c1eea50d4977e8d5aa45566a2fa72a76cbc78450660b5f7b35d82f2f1a733297
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to a 'rip curl gps watch manual'. No scripts were extracted, but the presence of embedded URLs and the nature of the detection suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://midufefew.ru/wix?keyword=rip+curl+gps+watch+manual
    • http://onsideball.info/93222592907i2cbe.pdf
    • https://cdn-cms.f-static.net/uploads/4424662/normal_604330045bce7.pdf
    • https://porukugo.weebly.com/uploads/1/3/1/3/131380087/7298901.pdf
    • https://xugubevowasisof.weebly.com/uploads/1/3/4/8/134885616/c026ea1ea94a.pdf
    • https://static.s123-cdn-static.com/uploads/4471091/normal_6005a63169c52.pdf
    • https://static.s123-cdn-static.com/uploads/4468550/normal_5fddd0f5e1a62.pdf
    • https://cdn-cms.f-static.net/uploads/4458163/normal_6014812101786.pdf
    • http://generatorsale.ru/the_magicians_season_5_episode_1395met.pdf
    • https://denuxikunoleluj.weebly.com/uploads/1/3/4/0/134018299/zimado-tununulimabub-danafunodubobol-wanixiveburib.pdf
    • https://mafugefowodofo.weebly.com/uploads/1/3/1/3/131378796/pulovabagufom-detiwebilujagom-zubezokiwipe.pdf
    • https://simepatu.weebly.com/uploads/1/3/4/2/134267103/dcd49b3.pdf
    • http://lnstagramcopyrightservices.org/best_free_minimalist_wordpress_themes_for_blogs6sesc.pdf
    • http://affilateapp.online/baruzugupisegegogojey458n.pdf
    • http://worldthailand.fun/breeding_netherland_dwarf_rabbits_colorapydt.pdf
    • http://fakaripeti.xyz/debogedexipagedewutasanif53jq7.pdf
    • http://cooldomen.space/aaha_naa_songsmlsxk.pdf
    • https://cdn-cms.f-static.net/uploads/4374704/normal_6017a45016c1e.pdf
    • http://espacecmb.xyz/pidizosawogabipizemazj2fm.pdf
    • https://cdn-cms.f-static.net/uploads/4387806/normal_6031b64c07f6c.pdf
    • https://static.s123-cdn-static.com/uploads/4427783/normal_60017f64d86c9.pdf
    • https://cdn-cms.f-static.net/uploads/4459170/normal_6026bba63a76f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://wemubateba.epizy.com/26780838372.pdf
    • http://jizuvopanusin.rf.gd/how_many_pirates_of_the_caribbean_movies_will_there_be.pdf
    • http://jexoxitisujoj.rf.gd/bilingual_books_free.pdf
    • http://jofatifexotuba.rf.gd/my_favorite_things_stamps_canada.pdf
    • http://dibezul.epizy.com/different_types_of_bolts_and_nuts.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6ea.bin
5a38cf6d6e4003d154e75023a11eba5ee07fe83d30e009f511bfafce15e30688		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6EA 5100 bytes
font_01_sfnt_off0000f823.bin
3a60d02b71635b1b40dd8ccf10e26d2c2128f5e7cf3cea6d64f2226be1c41f73		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF823 10720 bytes
font_02_sfnt_off00011cba.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11CBA 4324 bytes

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