Malicious PDF — malware analysis report

Static analysis result for SHA-256 01ea082d881d9154…

MALICIOUS

PDF

92.7 KB Created: 2021-04-07 18:59:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: d2aa5a7ed556a37d63cb80d85a56899d SHA-1: 4b9c9f1d85b412f26209a3fe4ad93644f055631c SHA-256: 01ea082d881d9154cde293950d78b71147ae350802b465ff0f30bb7dcc7be937
126 Risk Score

Malware Insights

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

The PDF contains embedded URLs and is flagged by multiple heuristics as malicious, including a ML classifier and ClamAV. The presence of 'caviar+delivery+driver+app' in a URL suggests a lure related to delivery services. Although no scripts were explicitly extracted, the PDF structure and embedded URIs indicate it's designed to redirect users to potentially malicious sites, aligning with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://druttle.ru/123?utm_term=caviar+delivery+driver+app PDF link annotation
    • https://cdn.sqhk.co/nilofixogezu/3hcdRCs/98724807929.pdfIn PDF document text
    • https://cdn.sqhk.co/gudijupimeb/gdhbaie/terraria_wyvern_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476274/normal_6046f9457adac.pdfIn PDF document text
    • http://kuworekokinig.medianewsonline.com/desifufu.pdfIn PDF document text
    • https://cdn.sqhk.co/xunijejozi/e4zgdjd/jebix.pdfIn PDF document text
    • http://saxozumipelezip.22web.org/grandia_1_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488141/normal_5fdac8bd33499.pdfIn PDF document text
    • http://bimoriz.getenjoyment.net/altruism_theory.pdfIn PDF document text
    • http://tujemet.scienceontheweb.net/application_form_for_cti_jobs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444110/normal_5fc846f44653b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367273/normal_60414f7bdd196.pdfIn PDF document text
    • https://cdn.sqhk.co/nozelenid/2jawUub/zombie_killer_2d_mod_apk_data.pdfIn PDF document text
    • https://cdn.sqhk.co/jagapifa/DgPwggF/61700239153.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455902/normal_603c6be6e51f9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://magetamuwunaze.rf.gd/3471706774.pdfIn PDF document text
    • https://b0b89e74-75d6-43b0-bb8f-fa2cd9bd5f5b.filesusr.com/ugd/b5ae3e_44e22c7105dd46d8897859b6831377b1.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/520660c8-90b2-45b5-90f7-b2467ced1b1b/kawasaki_prairie_400_rear_axle.pdfIn PDF document text
    • http://ramufezumax.rf.gd/refesojanotejibuxesiz.pdfIn PDF document text
    • https://b7af6bb9-01eb-4839-ab56-764651de4344.filesusr.com/ugd/2486b5_91cad3ee2091470e8f46c7d92bccc403.pdf?index=trueIn PDF document text
    • https://d52aed46-be45-4f9b-8106-cf6fc7ee66c0.filesusr.com/ugd/b148e5_e614788fc490446f8bb2bee481e257ac.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce5c2f98-8ded-445b-ba3e-d9eac910f2a7/the_emerald_tablet_of_thoth_complete.pdfIn PDF document text
    • http://toxifiv.myartsonline.com/foperesorosurufixov.pdfIn PDF document text
    • http://poziluxolebulu.epizy.com/hpcl_dcms_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1485cc3-f83b-4718-bffd-12fc1234bd06/35-1_human_body_systems_answer_key.pdfIn PDF document text
    • https://8be317c1-93d6-4444-9a1c-030c84ae583f.filesusr.com/ugd/709942_c9d4a69565ec472db341dc9ffb199ac3.pdf?index=trueIn PDF document text
    • http://sugunava.epizy.com/gofekelopivodupuruporegof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe4bf8d8-c370-460c-9661-d0430ffc0f98/24505443243.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000118af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118AF 4452 bytes
SHA-256: 65afc7a7b52ba5dd1d673752c6d927dded5bb4dbfd9b7ed61001ebe59cdfed56
font_01_sfnt_off000127de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127DE 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off0001306c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1306C 11048 bytes
SHA-256: 36b1e511818e61b2e36ec8268fd566ee17b1cd53bfc3fa463590d1d105344b0b
font_03_sfnt_off0001560e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1560E 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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