Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2a7213a5ab263f5…

MALICIOUS

PDF

81.1 KB Created: 2021-04-19 11:55:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ddfe721d5eeae90eb0ec1cf312d591c7 SHA-1: 4698c6e2532bde79348423d21643622bf9bf101e SHA-256: e2a7213a5ab263f586eed205b950d8fe90ff3f200f496892083958d79634cb3d
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains a large number of embedded URLs, many pointing to disposable domains, indicating a link farm or phishing attempt. The presence of external URIs and the ML classification strongly suggest malicious intent, likely to redirect users to sites hosting malware or phishing content.

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
  • 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://midufefew.ru/strik?utm_term=when+you+need+time+alone+quotes PDF link annotation
    • http://wefigofozotime.22web.org/tricep_rope_pushdown_form.pdfIn PDF document text
    • https://cdn.sqhk.co/sileluzorupo/jgiCgdw/67991320845.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370056/normal_60345b34bd7de.pdfIn PDF document text
    • https://cdn.sqhk.co/vapatibu/zjeapiy/hard_boiled_eggs_in_pressure_cooker_no_basket.pdfIn PDF document text
    • https://cdn.sqhk.co/riwajamugem/3OJ9if4/mass_mayhem_zombie_apocalypse_hacked_unblocked.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417212/normal_606cc205c2cd6.pdfIn PDF document text
    • https://cdn.sqhk.co/revujinarewu/hgKXjbo/hair_salons_near_me_cheap_but_good.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424637/normal_605e040628d1d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460465/normal_5ff84e775e164.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368958/normal_6026c3c8773d8.pdfIn PDF document text
    • http://niwuloxob.22web.org/parkinsonia_praecox.pdfIn PDF document text
    • http://tijesusugumuka.iblogger.org/60550115586.pdfIn PDF document text
    • http://lonavipesikebe.iblogger.org/nugajibitunelusabasaj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fec991a-e8ff-4f3e-b347-f61b12d0f6c2/zovusu.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/funisibojusarusovidawew.pdfIn PDF document text
    • http://mafonoxerinomif.epizy.com/lerefivagezomilebuge.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/49057567550.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cb43c57-e89e-4905-8cbb-c43c9d5ab3c7/2021_toyota_camry_se_awd_review.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/97125351440.pdfIn PDF document text
    • http://fosixijikalapi.epizy.com/48851441935.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_off000102aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102AA 5212 bytes
SHA-256: 040be6b60c073047ce6a4dd2bfad92ec56fb36ba670c8af1e297a5dddc5369ce
font_01_sfnt_off00011449.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11449 10348 bytes
SHA-256: e402220652e6c6079ee9d0d3da7cdc47b3cba3c174405288452d382eecc9c542

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