Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e5d1a864a831635…

MALICIOUS

PDF

211.8 KB Created: 2021-03-23 11:02:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 572e8e983adee06502f9a47b0e13f307 SHA-1: 7779040973591c41ab324cc79c7ea8604e6e1651 SHA-256: 1e5d1a864a831635c0e5b89219aeb94b310df846481480f0e2728a116e404511
104 Risk Score

Malware Insights

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

The PDF file contains an embedded URL pointing to a domain that appears to be part of a phishing or malware distribution scheme, disguised as a free download. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the presence of external URIs and the overall detection suggest the document is designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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
  • 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://jumiwimov.ru/wix?keyword=the+chronicles+of+narnia+pdf+free+download
    • https://cdn.sqhk.co/gusiloxi/djfierh/fusetuwelesugagunu.pdf
    • https://cdn.sqhk.co/wifilivemij/5ijwuji/elder_scrolls_legends_moons_of_elsweyr_card_reveal.pdf
    • https://cdn.sqhk.co/setewefasari/idhjjc9/wulagusogofipovo.pdf
    • https://cdn.sqhk.co/tokafumotebi/lhchbiy/17868126536.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.indictrans.org
    • https://s3.amazonaws.com/limewub/scratch_2_for_ipad.pdf
    • https://uploads.strikinglycdn.com/files/bd6826a4-0ab3-4f7f-a282-9a417f680535/gogelofelizidovos.pdf
    • https://s3.amazonaws.com/zisulamisozoto/sheep_heart_dissection_lab_answers_key.pdf
    • https://5e7fdb44-65a6-4d88-9b36-b69c04d36e08.filesusr.com/ugd/b547b4_36e8ae9c65e04af59a627fef709b2d57.pdf?index=true
    • https://s3.amazonaws.com/zopenave/baby_nursery_songs_video.pdf
    • https://uploads.strikinglycdn.com/files/451a01fe-d796-4282-a546-b15925affc24/95948076930.pdf
    • https://s3.amazonaws.com/defujo/sunuguxu.pdf
    • https://s3.amazonaws.com/retobifulipo/stoner_john_williams_review.pdf
    • https://9d50af6f-dbf7-41ba-b854-83985329a12b.filesusr.com/ugd/33c377_09267c19dd4b47479cd13048115283cb.pdf?index=true
    • https://91e55214-10ad-44cf-a10a-60a9392df58b.filesusr.com/ugd/e1c37d_2396f035374c4847bfce6c2ba94392a4.pdf?index=true
    • https://s3.amazonaws.com/nisiwanolom/acer_aspire_e15_non_removable_battery_not_charging.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00022e40.bin
ad995082ee5e0ea195fc59b602a3d884bc4a5f555d02cc331f6614827d970fe2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x22E40 60004 bytes
font_01_sfnt_off0002e6aa.bin
390eabad5a2dc7ade9597fe2d4baa9566709a8f68f9e8272084ec48659e0c404		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E6AA 5284 bytes
font_02_sfnt_off0002f8ac.bin
f21b05a2340b363a1ed8b0bbfc234bf9da5e90c1c639b98be765a2f280f9ba06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F8AC 5236 bytes
font_03_sfnt_off00030939.bin
e635fe50235041b137e10b1e3d17a91314f85f93ca5caac662f78a366236524d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30939 19476 bytes

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