Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed2c1bc0f12b59ff…

MALICIOUS

PDF

72.8 KB Created: 2021-03-27 11:36:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 11a89ab4de62bae962e56f3075ee4f9f SHA-1: b0a44f8d922fefbdb92f9d9d711716aa8c6f1ac3 SHA-256: ed2c1bc0f12b59ff7a48e300fd66c0e88857350835e8fff5b112b9a0feeb26ec
226 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm designed to direct users to potentially malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests a common tactic of encrypting payloads to bypass gateway scanning.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=album+song+ringtone++in+tamil PDF link annotation
    • https://cdn.sqhk.co/korokotuduki/heM9ERC/reversing_roe_netflix.pdfIn PDF document text
    • https://gororumemi.weebly.com/uploads/1/3/4/5/134517819/7022308.pdfIn PDF document text
    • https://cdn.sqhk.co/porosobof/cij2Zhc/red_herring_definition_and_example.pdfIn PDF document text
    • http://wisitens.online/697886775087r9on.pdfIn PDF document text
    • https://cdn.sqhk.co/tivuzofep/jeEKUig/mivaxerefetogaka.pdfIn PDF document text
    • http://salonlabs.xyz/armand_et_rolande_gamettenf.pdfIn PDF document text
    • https://cdn.sqhk.co/zomidami/CqgVjjK/toboninumotu.pdfIn PDF document text
    • https://vedakevuvapi.weebly.com/uploads/1/3/4/0/134013486/davebexegu.pdfIn PDF document text
    • https://cdn.sqhk.co/rifasidajika/hcgjggi/33955258748.pdfIn PDF document text
    • https://lexugorubu.weebly.com/uploads/1/3/0/7/130776619/8cdd557dd8.pdfIn PDF document text
    • https://cdn.sqhk.co/jukunobegabe/a8vejij/wwe_raw_results_winners_grades_reaction_today_match.pdfIn PDF document text
    • https://rubasabavajexo.weebly.com/uploads/1/3/6/0/136028040/xanad.pdfIn PDF document text
    • https://cdn.sqhk.co/tiluzegata/S3jiggX/sim_toolkit_application.pdfIn PDF document text
    • https://cdn.sqhk.co/kisesawaropo/CWFibA5/zeniwiza.pdfIn PDF document text
    • http://chisto-chisto52.ru/ropepolunededenezerezemwq6i.pdfIn PDF document text
    • https://cdn.sqhk.co/vuvupewog/dlpMCjc/download_anger_of_stick_1_apkpure.pdfIn PDF document text
    • https://rokipidofavum.weebly.com/uploads/1/3/4/0/134042790/c3f39b45c96eda.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dfc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC5 5132 bytes
SHA-256: f02697bae917ddb0c4f83c2ed5dfa63afe8a33589666353f207a6ee1be30b4cf
font_01_sfnt_off0000f11f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF11F 10868 bytes
SHA-256: c7fb9a43021bff25f5de7aa13d8ec01e08087255c9f40c81a92c37ac954112ad

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