Malicious PDF — malware analysis report

Static analysis result for SHA-256 155f14b8d20d563f…

MALICIOUS

PDF

89.2 KB Created: 2021-04-28 13:47:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: cf537206e158589393296014ff88e3d6 SHA-1: 265989994c9facafccbeeaffa702524dedb4752d SHA-256: 155f14b8d20d563f855067078c16170867367a00005e6c7ddc8c4efc6c53ddd3
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://crophysi.ru/strik?utm_term=el+pollo+loco+tostada+salad+calories PDF link annotation
    • https://sumokexopusoval.weebly.com/uploads/1/3/1/3/131378975/6962440.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428035/normal_6039fbf76facb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470679/normal_5fff83afca992.pdfIn PDF document text
    • https://gepavemu.weebly.com/uploads/1/3/4/8/134861499/5cbe09232eb.pdfIn PDF document text
    • http://fepaporipevari.mypressonline.com/xipifepuzakiloxizededolit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454436/normal_6036dd6a5c891.pdfIn PDF document text
    • http://jabilevij.mypressonline.com/futudexedaninewux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367947/normal_6036b46a4d14d.pdfIn PDF document text
    • http://nitiwomifigurod.mygamesonline.org/6845491940.pdfIn PDF document text
    • http://dosijefa.mypressonline.com/alopecia_areata_ofiasica.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413226/normal_6004cd822ac92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460677/normal_600dc71a7a5e7.pdfIn PDF document text
    • http://sosuziba.mypressonline.com/acetilcolina_efectos_secundarios.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4530070/normal_5ff15344939a3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/stokke_carrycot_sheets.pdfIn PDF document text
    • http://xezaretidatoro.onlinewebshop.net/rubagume.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/govezeron.pdfIn PDF document text
    • https://s3.amazonaws.com/sobaketemu/browning_a5_magnum_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/bengali_video_songs_a_to_z.pdfIn PDF document text
    • http://puvapulugo.onlinewebshop.net/57474576006.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011e61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E61 5024 bytes
SHA-256: e282a316986786a56b7c08b2ea10c581cbe759e6a68c5697b631fd8eececda09
font_01_sfnt_off00012f81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F81 12000 bytes
SHA-256: bda68927562019ecf2e4a97277a5da6a530bc0455b7a389ee4eb929632f6b950

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