Malicious PDF — malware analysis report

Static analysis result for SHA-256 fec347e57a65896c…

MALICIOUS

PDF

74.7 KB Created: 2021-06-04 07:42:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc221f4704eafb571cd6851d99410502 SHA-1: de790a60abb3f48bfce204bd6b125161a4d143f4 SHA-256: fec347e57a65896c0b0345ab9f9348fca529c60e3e56a936e9b8d26933279ba8
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to a URL that appears to be a lure related to reporting flood damage. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest a phishing or malware delivery attempt, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://catamma.ru/pbw?utm_term=how+do+i+report+flood+damage
    • https://cdn-cms.f-static.net/uploads/4471683/normal_5fe90a9c60512.pdf
    • https://static.s123-cdn-static.com/uploads/4489716/normal_5feb5f5ee0b50.pdf
    • https://cdn-cms.f-static.net/uploads/4454041/normal_60b99400d22de.pdf
    • https://static.s123-cdn-static.com/uploads/4450884/normal_5ffef884f0e2c.pdf
    • https://cdn-cms.f-static.net/uploads/4480588/normal_5fd294255d157.pdf
    • https://cdn-cms.f-static.net/uploads/4385876/normal_606e6608c440a.pdf
    • https://static.s123-cdn-static.com/uploads/4480148/normal_5fc93f52b898b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wuwazilizos.pbworks.com/w/file/fetch/144424164/42328037285.pdf
    • http://zufiwuz.pbworks.com/w/file/fetch/144581520/baixar_bblia_do_pregador_pentecostal.pdf
    • https://uploads.strikinglycdn.com/files/c6aff6ef-bb8d-4965-8e3a-81323f8356a2/kenmore_high_efficiency_washer_error_codes.pdf
    • http://mutatalibo.pbworks.com/w/file/fetch/144427311/renobenebavijegifodevuj.pdf
    • http://wigiwopajuke.pbworks.com/f/how_to_get_a_free_netflix_gift_code.pdf
    • https://uploads.strikinglycdn.com/files/195bdd00-2566-4768-be65-aac9a25246cd/xbox_360_wireless_controller_setup_windows_10.pdf
    • https://uploads.strikinglycdn.com/files/f0c0ed9e-3500-4063-85a8-945493a79c4c/design_of_reinforced_concrete_10th_edition.pdf
    • https://uploads.strikinglycdn.com/files/66da37ce-efc7-4895-bb8b-be02087a555a/fanovexaruzeleze.pdf
    • http://vamafob.pbworks.com/w/file/fetch/144450042/do_kaz_and_inej_get_together_reddit.pdf
    • http://gonumutat.pbworks.com/f/92746790615.pdf
    • https://uploads.strikinglycdn.com/files/a2c12aaf-648c-44b5-b807-a7a165eec057/good_strength_training_exercises_without_equipment.pdf
    • http://nikekuva.pbworks.com/f/islamic_names_meaning_in_urdu_book_download.pdf
    • https://uploads.strikinglycdn.com/files/0b4bb05d-743a-44d5-80ef-2d46238b937a/bafang_bbs02_user_manual.pdf
    • http://vazesuna.pbworks.com/w/file/fetch/144500127/xanufif.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_off0000e843.bin
b602f258513c4a0fe328ae4a4f8d3b57f5b43610c19ee92ea564d52b82a3986d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE843 5236 bytes
font_01_sfnt_off0000fa11.bin
602051fc6f9dc2aa253998fdca36b43086619d66e6e292ad2fd05127937bee5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA11 10424 bytes

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