Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fb89f0a0de333f4…

MALICIOUS

PDF

101.2 KB Created: 2021-03-19 07:14:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 2486dafdcbfadfc1fe9a37b1325cec99 SHA-1: 5b63d3dd5e861a125ec597d4e2ff66b8642edf1f SHA-256: 5fb89f0a0de333f47cec437d63d6f6942e053a94a724c7f715aa3b53081197bb
226 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a phishing lure, employing a link farm of external PDFs to potentially disguise malicious content. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document's purpose is to instruct users to decrypt an archive, a common tactic to evade initial gateway scanning. The presence of numerous external links, many hosted on disposable domains, further supports this assessment. While no scripts were directly extracted, the overall structure and heuristic firings indicate a malicious intent to trick users into downloading further stages of a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://botokaw.ru/wix?keyword=world%2527s+hardest+quiz+2 PDF link annotation
    • https://tebojejuket.weebly.com/uploads/1/3/4/7/134764489/jopinosibu-texelotej-julaw.pdfIn PDF document text
    • http://gabutetidik.22web.org/reptile_the_2009_manual_of_the_plaintiffs_revolution_audiobook.pdfIn PDF document text
    • https://redulexaxoxega.weebly.com/uploads/1/3/0/8/130874010/4963262.pdfIn PDF document text
    • https://gorejirulikem.weebly.com/uploads/1/3/4/7/134738880/tarixa.pdfIn PDF document text
    • https://xolivura.weebly.com/uploads/1/3/5/9/135958321/nulosaziba-kulironivudix-nubaxiponotisix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423452/normal_602d7d9926f17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501214/normal_603b034625314.pdfIn PDF document text
    • http://pedron.fun/dezixakidobuzozuluza9eh6q.pdfIn PDF document text
    • https://gidaxejopof.weebly.com/uploads/1/3/4/3/134305554/jabexinekivisofinubi.pdfIn PDF document text
    • https://nodepuje.weebly.com/uploads/1/3/4/5/134518199/vomelijobo.pdfIn PDF document text
    • https://jafiwivejo.weebly.com/uploads/1/3/5/3/135305612/cb501f219141.pdfIn PDF document text
    • https://peliwotamo.weebly.com/uploads/1/3/5/3/135325711/sigasifuvi.pdfIn PDF document text
    • http://blacklaser.ru/fojugf3xvo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422148/normal_601778d8e597d.pdfIn PDF document text
    • http://zomuregunaradu.iblogger.org/risurowibif.pdfIn PDF document text
    • http://anbieterbewertung-autoscoutch.com/battlefield_4_pc_full_versionygyap.pdfIn PDF document text
    • http://robinmani.site/zesojekilawopexiripenonif5mjre.pdfIn PDF document text
    • https://javumegibevi.weebly.com/uploads/1/3/4/6/134634398/xedutuko.pdfIn PDF document text
    • https://pipenibeteza.weebly.com/uploads/1/3/4/5/134508730/5512021.pdfIn PDF document text
    • https://nikitepiwaligu.weebly.com/uploads/1/3/4/6/134647260/mavutokepipumigu.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011d9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D9C 6744 bytes
SHA-256: 127b44c9f93874c96d25eb7ddc4688780d8877ce931cf296363fb5748d8d514b
font_01_sfnt_off00012e83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E83 5268 bytes
SHA-256: 192621953df9947eef1a79415e697ecbebadbe44dacf4446caf0c25a431ad967
font_02_sfnt_off00014073.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14073 1936 bytes
SHA-256: 21a7146106e2ad29a4dcc6aa55cee169416400570e2b3d493b6d071cb256f2f3
font_03_sfnt_off000149b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x149B5 11460 bytes
SHA-256: 8735cc5b7b1ef257c82bace4e83e4d31c2c0a906c61b82c04088e5817f50b4b9
font_04_sfnt_off000170be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x170BE 16248 bytes
SHA-256: 5e01d8b52596c6ca68dbfa7a23cbc88c722277ddc86103066388e602a144711e

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