Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea8756d703e6f8c5…

MALICIOUS

PDF

93.8 KB Created: 2021-03-14 05:59:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c8c146675530ca6779210ff40d9fb5c5 SHA-1: 7f52d5970922cb7f6a301578280dd092ba944bcd SHA-256: ea8756d703e6f8c59292d5dc79cc245cb1c266ce4bb024a91b814e2a7be630ac
144 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, one of which is directly associated with a heuristic firing for a payment redirection lure. ClamAV also detected this file as a phishing trojan. The presence of a download button lure further supports the malicious intent of tricking users into downloading potentially harmful content. No scripts were extracted, but the overall pattern suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://vilenefex.ru/wix?keyword=kika+emoji+keyboard+vip+apk
    • https://static.s123-cdn-static.com/uploads/4426954/normal_5ff7b8606c32c.pdf
    • http://hookup671.site/368299654256ggix.pdf
    • https://cdn-cms.f-static.net/uploads/4376870/normal_602ee64107cbe.pdf
    • https://cdn.sqhk.co/mewidexe/AihjauU/kumusotofalenirinekizin.pdf
    • http://yourbigdick.space/bosch_dishwasher_she3ar75uc_reviewsogxae.pdf
    • https://cdn.sqhk.co/jifigetuxu/f7gclha/electric_radiant_floor_heating_diy.pdf
    • http://mamajan.space/bajujoketuvenepunujosumukom8v1.pdf
    • https://cdn.sqhk.co/teketerep/jEjiuRH/17293625212.pdf
    • http://mjawebdesign.net/how_to_connect_bluetooth_speaker_to_computer_windows_8cpp89.pdf
    • http://ses-sanobrabotka.ru/angielski_a1_sownictwonk7gd.pdf
    • https://static.s123-cdn-static.com/uploads/4501214/normal_60034f36bc42f.pdf
    • http://demask.fun/rigesi3b85y.pdf
    • http://sendgrid-de.com/what_navy_seal_training_taught_metsoii.pdf
    • http://ogranicbio.fun/gapaxitabozixelm9t04.pdf
    • http://nesobaka3.xyz/find_affine_transformation_matrix_matlabsqjjy.pdf
    • https://cdn.sqhk.co/pubodegosog/jcUhf9J/6860449355.pdf
    • https://cdn-cms.f-static.net/uploads/4369923/normal_602497422c61f.pdf
    • http://olymptrade.buzz/dabbe_4_cin_arpmas_full_moviee6eas.pdf
    • https://cdn.sqhk.co/givifevulo/dieo3kb/grimvalor_switch_gameplay.pdf
    • https://static.s123-cdn-static.com/uploads/4467285/normal_5fc866be8cf41.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011060.bin
b516d0bf017a7259018b68d16a8f984f5afdf3cd260f46cc0eec3812590354f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11060 5308 bytes
font_01_sfnt_off0001225d.bin
549497e3c847635a34d42dcfcf26a2fd1bfcbbecb2cf2ae742beacf92b8d3718		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1225D 2204 bytes
font_02_sfnt_off00012c7a.bin
5befa547e50289191923616cd905f5ce81e9817de709661d22f635c6c0ba0b8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C7A 11740 bytes
font_03_sfnt_off00015495.bin
3f70697d8cfd0b9becff5adcad726f9ffedcc5d773cc6f7abbcc82b2f8034994		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15495 16164 bytes

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