Malicious PDF — malware analysis report

Static analysis result for SHA-256 511edcaaa6f66265…

MALICIOUS

PDF

67.7 KB Created: 2021-04-23 04:09:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7acf0b1f5ffb49c45b43bde2a7371a15 SHA-1: cbe7731d4df5f5fd2f176456f59fdb78308c16de SHA-256: 511edcaaa6f6626595dedd0ddae6084e69e6f7a087b349bce5d11e949f307120
124 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains numerous embedded links, many of which point to disposable or unknown domains, suggesting a link farm or phishing attempt. While no scripts were directly extracted, the PDF structure and heuristic firings indicate an attempt to redirect users to potentially harmful external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5997

Heuristics 4

  • 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
  • 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://www.ofalloncasting.com/sites/default/files/webform/nunemoxajusadokuxilebe.pdf
    • http://www.grotekeukens.be/sites/default/files/webform/gmawards2018/41850888982.pdf
    • https://www.cdcplumbing.com/sites/default/files/webform/contact-us/sawifujemenolezaf.pdf
    • http://www.muttypawsacademy.com/sites/default/files/webform/vaccines/65827293628.pdf
    • https://www.enwidth.com/sites/default/files/webform/resumes/paxifufal.pdf
    • http://russian-ice-spb.ru/sites/default/files/webform/files/42282539280.pdf
    • https://www.enwidth.com/sites/default/files/webform/resumes/48862039041.pdf
    • https://ambrose.edu/sites/default/files/webform/rebunedirewe.pdf
    • http://cicatsalud.com/html/sites/default/files/webform/59286961246.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=online+quran+classes+usa
    • https://www.healthdata.org/sites/default/files/resumes/mevupuxapiledowitire.pdf
    • https://gradfutures.princeton.edu/system/files/webform/16157352895.pdf
    • https://www.vub.be/sites/vub/files/webform/fazarixi.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ceae.bin
4233cf2b99ab407df43e0f922effdc7b01a9f533706850d37ac3011a22d0cfea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCEAE 4636 bytes
font_01_sfnt_off0000de70.bin
a02e0889949c25d288f47b3b9788fdff5482960160b6b67f700260d6cbe17ab5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE70 10800 bytes
font_02_sfnt_off0001030e.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1030E 4324 bytes

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