Malicious PDF — malware analysis report

Static analysis result for SHA-256 f38b01bfbbb532e2…

MALICIOUS

PDF

80.4 KB Created: 2021-02-13 08:59:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 040c9120bd677b73ede8418d9d80d588 SHA-1: 9a9540f7dbce9c4151bfcc68ad7e10d246f68193 SHA-256: f38b01bfbbb532e2f40777f66fe8348029560ce41c8d2dc5005319c4668a12a6
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=html5%20left%20side%20navigation%20menu%20templates In PDF document text
    • https://figiroxofidun.weebly.com/uploads/1/3/0/7/130740151/483718.pdfIn PDF document text
    • http://amst-watch-v2.club/egyptian_labor_law_in_english8vqtg.pdfIn PDF document text
    • http://yazansoft.com/2095227099622v9a.pdfIn PDF document text
    • https://nedovewa.weebly.com/uploads/1/3/5/3/135316636/3fa70.pdfIn PDF document text
    • http://ewwe.space/7334079205944sm6.pdfIn PDF document text
    • http://sozetil.66ghz.com/63565754700.pdfIn PDF document text
    • http://nudistoff.club/autocad_trial_version_201574qo5.pdfIn PDF document text
    • http://presentinsta.online/pba_bowling_challenge_on_firestick_2_playerp253r.pdfIn PDF document text
    • http://canonsburglake.com/cardboard_iron_man_glove_template2jk7t.pdfIn PDF document text
    • http://it50save.info/jikatafigomatugopamudajefzff63.pdfIn PDF document text
    • http://circus.market/international_superstar_soccer_deluxe_download_snesu77ob.pdfIn PDF document text
    • http://rigojakivuvemi.iblogger.org/kutojoxutonugebaweledok.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://visobiwedixupip.rf.gd/xebavuz.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/51670615327.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/82738804333.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_off00010001.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10001 5412 bytes
SHA-256: 89d3429e272ac4c616a445565ca0f1292534cd9b1796c2781bd5586603f6e72d
font_01_sfnt_off00011266.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11266 10020 bytes
SHA-256: 3695eb20eaf05409550289bc3ec165f17fe3a43e1d7aefb4416825d86b2f1333