Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e1507842e72b3cc…

MALICIOUS

PDF

72.9 KB Created: 2021-02-13 18:14:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 3295f8d21f521cfff21ecdef8c44229f SHA-1: 3bbfdcb6ebafd7c32f0d539d9b836d7105551a8d SHA-256: 5e1507842e72b3cc9210c7f999f733a236b06de7045c04b2c5aa3022048e3c4c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to redirect users to potentially harmful content. The presence of a 'download' button lure further supports a phishing or scamming objective.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://leonvi.ru/aws?utm_term=mens+bow+tie+pattern+pdf PDF link annotation
    • https://bokosemebejira.weebly.com/uploads/1/3/0/8/130813317/zisaxiwirupa.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/egfrQOk/4246519541.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388162/normal_600595069c3c3.pdfIn PDF document text
    • https://ninefajesazaga.weebly.com/uploads/1/3/5/3/135384029/10b08a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480594/normal_601aea76a515d.pdfIn PDF document text
    • https://tavabaxo.weebly.com/uploads/1/3/1/0/131071290/todenegak.pdfIn PDF document text
    • https://mapobosani.weebly.com/uploads/1/3/4/3/134385232/545c9b0a4be43.pdfIn PDF document text
    • https://xivapumi.weebly.com/uploads/1/3/1/6/131606059/7224983.pdfIn PDF document text
    • https://poxovarakegi.weebly.com/uploads/1/3/5/3/135326731/51d3521581ffb.pdfIn PDF document text
    • https://gatojodegapov.weebly.com/uploads/1/3/1/6/131637656/rexaligusapimiwufi.pdfIn PDF document text
    • https://gedofulijul.weebly.com/uploads/1/3/0/7/130775434/fobutexidez.pdfIn PDF document text
    • https://giweberemep.weebly.com/uploads/1/3/2/6/132682555/3691588.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jufebiwewizeza.rf.gd/bimubili.pdfIn PDF document text
    • http://tojederetesez.epizy.com/ahirani_movies_2018.pdfIn PDF document text
    • http://lipewolitaden.epizy.com/cad_block_free_lamp.pdfIn PDF document text
    • http://rigirulame.epizy.com/3884258518.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_off0000e01d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE01D 5240 bytes
SHA-256: 7b00c21eba4e7f53442ea1e1c406365c4b1f281eedfe8e34f3b56e99fa337a3f
font_01_sfnt_off0000f210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF210 10664 bytes
SHA-256: 136270fb60f04664a3097a6f8a9cf0f053ab257e391a01d474a59a1aee3d8eed

Open this report in the interactive analyzer, or submit your own file for analysis.