Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ac1c5b37135a687…

MALICIOUS

PDF

83.9 KB Created: 2021-04-04 16:18:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dbf62691951a9a4210fa11008f8f256d SHA-1: 7294df2d0ee68c526d4e22eea61736eac2f8154d SHA-256: 5ac1c5b37135a687f7a46334f16c68a7ce4ba46e3fa0c252bc1e8c130d46a43d
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to redirect users to malicious content, potentially for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://vilenefex.ru/strik?utm_term=pokemon+sapphire+how+to+get+into+team+aqua%2527s+hideout
    • https://cdn-cms.f-static.net/uploads/4445340/normal_60301a8207afb.pdf
    • https://cdn-cms.f-static.net/uploads/4421209/normal_602d9ccfad833.pdf
    • https://cdn.sqhk.co/vonezositixi/a9B1iiU/how_to_use_voico_uae_application.pdf
    • http://dobofozepop.mygamesonline.org/is_death_note_a_netflix_original.pdf
    • https://cdn.sqhk.co/xagaxubibiz/wtzXOje/turning_circle_formula_at_anchor.pdf
    • https://cdn.sqhk.co/pixafosabow/koJnZjf/real_piano_tiles_online.pdf
    • https://fowaloxew.weebly.com/uploads/1/3/4/8/134881160/putogadedogax.pdf
    • https://cdn.sqhk.co/gulijolane/gghmcie/ninjas_infinity_2_hack.pdf
    • http://luvatok.66ghz.com/icici_best_mutual_fund_for_sip_2020.pdf
    • https://subusigigug.weebly.com/uploads/1/3/5/3/135316146/4835470.pdf
    • https://static.s123-cdn-static.com/uploads/4404520/normal_5fcf4108bd9ff.pdf
    • http://lofoporubatul.mygamesonline.org/cambridge_business_benchmark_advanced.pdf
    • https://zuwuloju.weebly.com/uploads/1/3/2/6/132681456/matafux-fikapolewu-lakid-koteni.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://wenafebadutaw.rf.gd/job_vacancy_advertisement_sample.pdf
    • http://ratesedefavure.epizy.com/up_current_affairs_in_english.pdf
    • http://lamupogagu.rf.gd/26523808988.pdf
    • http://mutifesojare.epizy.com/free_streaming_app_for_android_tv_box.pdf
    • http://renawexit.epizy.com/mozilla_firefox_android_github.pdf
    • http://jipowefata.epizy.com/creative_cloud_application_helpx.pdf
    • http://wafibajew.epizy.com/bliss_android_x86.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_off0000ec98.bin
d898a5be1e157353844b36a60f8444db6aee0b7d0207bec5741cd627096181b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC98 3704 bytes
font_01_sfnt_off0000f9dc.bin
7a13f892d88ea496748674e891cb3d61a7fb6cc48c000c99ad8049eff0f4b2b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9DC 5540 bytes
font_02_sfnt_off00010c8d.bin
78820ba0daf6f3060afb322660dce58e86e0d0b5081b13a89827499f12a91183		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C8D 10924 bytes
font_03_sfnt_off0001318d.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1318D 4324 bytes

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