Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dfacb1c85d7eee3…

MALICIOUS

PDF

77.2 KB Created: 2021-03-21 06:11:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 467c1a43c55901d658cd29b0b4deb026 SHA-1: 88f9ccd1a40cce2a150e19ad53b272856ddc2a4b SHA-256: 3dfacb1c85d7eee3c4cd24a2583c378669fd00b38b47ad700f2846d42657b077
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing attempt. It contains an external URI pointing to a URL that likely serves a malicious payload. The document body, though heavily obfuscated, appears to be a lure related to vehicle specifications.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://dafemum.ru/strik?utm_term=2013+jeep+grand+cherokee+3.0+crd+overland+specs
    • https://cdn-cms.f-static.net/uploads/4374374/normal_5fdb5703c7548.pdf
    • https://static.s123-cdn-static.com/uploads/4386607/normal_5ff9a53b54c35.pdf
    • http://xarusogu.22web.org/zefifejegipemojulole.pdf
    • https://cdn-cms.f-static.net/uploads/4453118/normal_5fe8befea041c.pdf
    • https://dedodewoluxo.weebly.com/uploads/1/3/4/4/134402612/xorep.pdf
    • http://demegudatodura.iblogger.org/how_to_pair_weight_watchers_bluetooth_scale.pdf
    • http://nexekeb.iblogger.org/windows_media_player_classic_free_filehippo.pdf
    • https://tudisapa.weebly.com/uploads/1/3/4/6/134660317/fufemepuviba-lujunuz-litivesat.pdf
    • https://penonogam.weebly.com/uploads/1/3/4/0/134012545/rewimip_xizil_sebasanozewa.pdf
    • http://kesisofawa.mygamesonline.org/dejino.pdf
    • https://cdn-cms.f-static.net/uploads/4418556/normal_5fd1c3eec1cc8.pdf
    • https://lowezikalazana.weebly.com/uploads/1/3/0/9/130969016/rijumot.pdf
    • https://sanokigoj.weebly.com/uploads/1/3/4/8/134863934/xikazajimegobaja.pdf
    • https://cdn-cms.f-static.net/uploads/4470678/normal_604c9db30c4d4.pdf
    • http://kugetepe.22web.org/rejuvelub.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://diwavubodinaroj.myartsonline.com/acrobat_download_for_windows_7.pdf
    • https://s3.amazonaws.com/vonutavekip/total_gym_1000_parts_ebay.pdf
    • http://polexusuzoxofiw.epizy.com/jukoligujema.pdf
    • https://s3.amazonaws.com/lusabifef/50617299714.pdf
    • http://bapexuzajo.epizy.com/goxumivoxupuziv.pdf
    • http://bumufir.rf.gd/wavaxagazenefinuxetumalit.pdf
    • http://podixevobelataw.rf.gd/solucionario_mecanica_vectorial_para_ingenieros_estatica_capitulo_5.pdf
    • http://netuvorib.epizy.com/fufovukibijo.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_off0000ee89.bin
3de9d253964d958fc384624efb26eed78c9dcb5aea9c5c11c6b288abd87f95e2
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE89 5964 bytes
font_01_sfnt_off000102e3.bin
037cf9597eeaea0f00674f5146ba0debc682ee3d8b5231ef4b7515d9465fd1e4
pdf-font-stream PDF embedded font (sfnt) at offset 0x102E3 10628 bytes