Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0a63299955244a8…

MALICIOUS

PDF

83.2 KB Created: 2021-04-01 06:29:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 851d189a64160fcb37ea94ad74103121 SHA-1: 750663e36e8a22f1f2744d485f4579371423e00d SHA-256: f0a63299955244a8cedc2bef581ea5f80f01269d7e59b6b62a545b9d75ef1f71
104 Risk Score

Malware Insights

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

The sample is a PDF file flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing campaign. The heuristic 'SE_URGENCY_LURE' suggests the document's content aims to create a false sense of urgency to prompt user interaction.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://pelibifir.ru/wix?keyword=answers+flow+training
    • https://kofivenemiwelew.weebly.com/uploads/1/3/1/3/131380814/maveg.pdf
    • https://figagukedeliv.weebly.com/uploads/1/3/4/0/134040575/kexat_wugitonoferir_fubeko_pukumidijogo.pdf
    • http://kimujedat.mygamesonline.org/motesekos.pdf
    • https://fejilexa.weebly.com/uploads/1/3/1/1/131163980/titojaliler-pujakapudisabid.pdf
    • https://rokajovata.weebly.com/uploads/1/3/4/3/134376264/7903667.pdf
    • https://zubosevofugojat.weebly.com/uploads/1/3/4/3/134307347/wokit.pdf
    • https://rarinuda.weebly.com/uploads/1/3/5/3/135349313/bagegukumiwa.pdf
    • https://numetoximo.weebly.com/uploads/1/3/4/7/134717633/nevilonekadawo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/tixeligufokup/ayo_and_teo_rolex_dance.pdf
    • http://wuzorijo.rf.gd/blank_black_t_shirt_template_vector.pdf
    • https://s3.amazonaws.com/zisulamisozoto/the_21_irrefutable_laws_of_leadership_facilitator_guide.pdf
    • https://uploads.strikinglycdn.com/files/269d8103-04e2-465d-8c87-8bf4ed7a0b8b/el_lazarillo_de_tormes_pelicula_fernando_fernan_gomez.pdf
    • http://pizitibasowu.atwebpages.com/61490780663.pdf
    • https://s3.amazonaws.com/posufij/stories_of_your_life_and_others_by_ted_chiang.pdf
    • http://sitasuwa.epizy.com/libokejogedajelasize.pdf
    • https://uploads.strikinglycdn.com/files/2cb8aae7-7a99-4bec-bc58-6ee0ef6d801a/luboboba.pdf
    • https://s3.amazonaws.com/mukut/papoduvufolalepiweduli.pdf
    • http://nokivegodixisi.rf.gd/el_caballo_de_troya_6.pdf
    • https://uploads.strikinglycdn.com/files/067ca9b5-da1a-4338-9107-53cc602a8b0d/sukosupunanoda.pdf
    • http://gipezivav.epizy.com/honeywell_evohome_installation_guide.pdf
    • http://wutesejib.onlinewebshop.net/que_es_metodo_en_criminalistica.pdf
    • http://xuxerutiwuv.onlinewebshop.net/98183465528.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f88b.bin
92ab6f31a3ea5297534048f4b8d60be72a80c22415faef99089f546859338b08		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF88B 4804 bytes
font_01_sfnt_off000108f5.bin
29fcd2ffa37156117843595dbe2e67cbe05d73394875c5fd38a71241bfdc3001		 pdf-font-stream PDF embedded font (sfnt) at offset 0x108F5 11284 bytes
font_02_sfnt_off00012f74.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F74 4324 bytes

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