Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee4d32521c1f1e8b…

MALICIOUS

PDF

73.0 KB Created: 2021-01-23 04:47:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: c57ac4b3557ce04c0425eef778b45f6b SHA-1: f670357dd2ae1c9993a8c06fe328da1371c95ddd SHA-256: ee4d32521c1f1e8b39a68af349edea687c7724587278a21d88ad260d5bb9a4ad
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, with one prominent URL pointing to a suspicious domain that appears to be part of a link farm designed to redirect users. The document body, though heavily obfuscated, suggests a lure related to 'detail architecture magazine pdf'. No scripts were extracted, but the presence of external URIs and the overall heuristic profile strongly suggest a malicious intent to redirect the user to a compromised or malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafficel.ru/aws?utm_term=detail+architecture+magazine+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4421215/normal_5ff787d721916.pdfIn PDF document text
    • https://site-1173911.mozfiles.com/files/1173911/temple_escape_room.pdfIn PDF document text
    • https://kajovagej.weebly.com/uploads/1/3/4/7/134747054/6842916.pdfIn PDF document text
    • https://motisodufar.weebly.com/uploads/1/3/5/4/135400919/4ddd9ff67.pdfIn PDF document text
    • https://site-1168079.mozfiles.com/files/1168079/gibirofar.pdfIn PDF document text
    • https://tifomuzaki.weebly.com/uploads/1/3/1/1/131163977/wexefi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389793/normal_5ffd091326261.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393018/normal_5fe48761e1085.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/pisik/supemipapenatodob.pdfIn PDF document text
    • http://guwitus.epizy.com/cell_phone_tracker_application.pdfIn PDF document text
    • http://ralivapoked.epizy.com/temperance_persona_5_guide.pdfIn PDF document text
    • http://sasitegeke.epizy.com/kexoxulusaragexezuja.pdfIn PDF document text
    • http://bitugoxopezuwu.rf.gd/76164707261.pdfIn PDF document text
    • http://gisipusizen.rf.gd/wow_addon_bartender4_guide.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_off0000e04c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE04C 5440 bytes
SHA-256: 8fb2baa37e7d413471a3ad893dd1035d28e3f6cf0cd8b9ed46946acc17040bf4
font_01_sfnt_off0000f2b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B6 10688 bytes
SHA-256: da2d920d0edbd5a12668b12ca07588ff9d462df5fc7a96cbc67c01f6b8030492

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