Malicious PDF — malware analysis report

Static analysis result for SHA-256 7719dd70110b5457…

MALICIOUS

PDF

102.3 KB Created: 2021-04-12 05:02:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b5a67523fc29d017c1f58f2c0690494 SHA-1: 10d8627c8d0a7fee342434619de0363b0ff7515c SHA-256: 7719dd70110b5457074594de10d3d690dff1a5431eef8b706b774febf396a3f1
136 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics, including a machine learning classifier and ClamAV, indicating malicious intent. The presence of advance-fee scam language strongly suggests a phishing or fraud attempt. The document contains an embedded URI pointing to a suspicious domain, likely intended to lead the user to a malicious site or download a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://ponafet.ru/strik?utm_term=international+socio-cultural+environment+meaning
    • http://pevetune.66ghz.com/top_bollywood_songs_list.pdf
    • https://cdn.sqhk.co/xufatirumina/Lhfhbgi/wordpress_themes_for_travel_blogs.pdf
    • https://cdn-cms.f-static.net/uploads/4368756/normal_60118aec2316e.pdf
    • https://cdn-cms.f-static.net/uploads/4473903/normal_5fe64ea67c1d4.pdf
    • https://cdn-cms.f-static.net/uploads/4415073/normal_6016fda36ddc0.pdf
    • https://cdn.sqhk.co/lerapuraroke/dhfjjnb/tokevarefivativajoj.pdf
    • https://cdn-cms.f-static.net/uploads/4402246/normal_603955c81c77a.pdf
    • https://cdn-cms.f-static.net/uploads/4384143/normal_60447072d0aa1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/be01eb9f-96d8-4a80-bc7f-53063f2f1334/pulejemo.pdf
    • https://uploads.strikinglycdn.com/files/83241fe7-2e37-4f27-b486-00e38fc62b68/love_story_song_taylor_swift_download.pdf
    • https://uploads.strikinglycdn.com/files/c48cdd58-cf05-48b1-9227-96e3723f045d/what_is_a_good_personal_objective.pdf
    • http://mujawonevafo.rf.gd/altova_xmlspy_free_for_windows_10.pdf
    • http://wuzorijo.rf.gd/69023563462.pdf
    • http://nowoduxer.rf.gd/stampante_epson_wf_2630_errore_0xf1.pdf
    • https://uploads.strikinglycdn.com/files/773cf821-5031-4d2b-a40e-85efe19124a0/which_bread_maker_is_best_uk.pdf
    • https://uploads.strikinglycdn.com/files/90f10033-9f80-4bd4-ace8-4cd9a62f874d/gidalek.pdf
    • https://uploads.strikinglycdn.com/files/137d85bd-3e8d-4f6b-a136-b9498e2afc1b/78837447295.pdf
    • https://uploads.strikinglycdn.com/files/934eb673-7a4f-4243-95fc-5aac0c0c836e/wesinumumomaporulag.pdf
    • https://uploads.strikinglycdn.com/files/b03bc44d-4a7a-42f5-bec5-6cb641e571bd/66567660249.pdf
    • https://uploads.strikinglycdn.com/files/151d4b5a-fa4d-4899-a0c8-fe9187f83d3a/butefinemuwimu.pdf
    • https://uploads.strikinglycdn.com/files/0d6a3bec-6ecc-43a8-8a81-f8a7e2e6d642/how_do_i_update_my_vizio_smart_tv_firmware.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014d40.bin
f0ebdfdeac52fed2ee17888b66b73520776dbbc5155c3947ace19a66807c274d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14D40 5148 bytes
font_01_sfnt_off00015eb8.bin
a171189b85238844ca95afaff16263559da8943bafe53899c414790654333563		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15EB8 13484 bytes

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