Malicious PDF — malware analysis report

Static analysis result for SHA-256 f60da6680a6a470d…

MALICIOUS

PDF

67.3 KB Created: 2021-02-14 08:59:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: e361b8dd4caa7267856563ae3c15ace1 SHA-1: 50b857cc5c75636e8b711af6792fb94ac69131d1 SHA-256: f60da6680a6a470de655d068f35fa5188377f57c67193cd2a8d3f842a1007af2
186 Risk Score

Malware Insights

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

This PDF file is identified as malicious by multiple heuristics and a machine learning classifier, including ClamAV's 'Pdf.Phishing.Trojan'. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The embedded URLs are designed to redirect users to potentially malicious content, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://jacksth.ru/wix?keyword=the+sanford+guide+to+antimicrobial+therapy+2017 PDF link annotation
    • https://cdn.sqhk.co/gegojagakexu/hirggha/36284107829.pdfIn PDF document text
    • https://kifosaxuwaf.weebly.com/uploads/1/3/4/0/134016965/gemuxususikof.pdfIn PDF document text
    • https://lavivatum.weebly.com/uploads/1/3/1/4/131437335/58d5c0.pdfIn PDF document text
    • http://rimka.xyz/resumen_de_tus_zonas_erroneas7fd4s.pdfIn PDF document text
    • https://nutolifawivu.weebly.com/uploads/1/3/1/4/131437776/sesefozebafa-kinukevom-jupurefusekit.pdfIn PDF document text
    • https://kilizilefepik.weebly.com/uploads/1/3/0/7/130775254/dufijidosavobeb.pdfIn PDF document text
    • https://cdn.sqhk.co/jakatote/cl8QgHw/multiple_facebook_accounts_ipad_pro.pdfIn PDF document text
    • https://cdn.sqhk.co/tavikagisato/h05Djfb/begozajojigitome.pdfIn PDF document text
    • https://cdn.sqhk.co/sirojenu/JhjjkbK/24257846977.pdfIn PDF document text
    • https://pupadidaf.weebly.com/uploads/1/3/0/8/130873798/kejukekuvinojisigiki.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/defipedibe/tosaver.pdfIn PDF document text
    • https://s3.amazonaws.com/xiwevitox/barron_s_sat_practice_test_4_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/48710720858.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/former_baseball_player_shot_in_dominican_republic.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_off0000c829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC829 6164 bytes
SHA-256: 2790a775f4d9cf9837daf2c4892aff19be7816414b16c970980df51a43827317
font_01_sfnt_off0000dd08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD08 10196 bytes
SHA-256: 9618c7b4d6b15843b2dbc19c03b5a9d51c9fd5caa16fa7f81ad40630f99dfcdb

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