Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7fa08d0eecb2b2b…

MALICIOUS

PDF

70.6 KB Created: 2021-03-01 10:13:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 30836f0ee4b0a78c0e19599c668c0c24 SHA-1: ff9544696a655159f2e1828ab1fed4bae1ed4e29 SHA-256: a7fa08d0eecb2b2b131af5d9957413362e578315cd768e2d919c19c904abcfed
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically identified as a link farm hosted on disposable infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were directly extracted, the PDF structure and URL patterns are consistent with common phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fokemale.ru/strik?utm_term=fit+life+physical+therapy+philadelphia PDF link annotation
    • https://cdn.sqhk.co/kutupejotige/icZjafj/mini_dachshund_weight_range.pdfIn PDF document text
    • https://cdn.sqhk.co/senuziker/jCtanOl/shotgun_shot_sound_download.pdfIn PDF document text
    • http://trikolor.site/zolofopatibfkzg.pdfIn PDF document text
    • http://beviluxenumiliv.mywebcommunity.org/que_es_cianuro_de_potasio.pdfIn PDF document text
    • https://cdn.sqhk.co/lexoxuxoluvi/hjXuKgc/zunar.pdfIn PDF document text
    • http://fajiriduxir.medianewsonline.com/what_are_the_seven_mortal_sins.pdfIn PDF document text
    • http://recepty-dd.info/xuvagol3lb.pdfIn PDF document text
    • http://wunadimizurened.medianewsonline.com/what_does_the_choke_on_a_snowblower_do.pdfIn PDF document text
    • https://cdn.sqhk.co/sepetoxofaw/hfnMiiU/baby_yoda_games_online.pdfIn PDF document text
    • http://sujimelowakolop.medianewsonline.com/resumen_del_caballero_dela_armadura_oxidada_por_captulos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zogosugo.onlinewebshop.net/diresejosalebutusavuvaza.pdfIn PDF document text
    • https://s3.amazonaws.com/dikomavomem/luvoxonirororapotak.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/90652184366.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/39202105438.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_off0000d725.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD725 5300 bytes
SHA-256: feaf5ab9127a6e7e1b0599e1551b56f20e5ea18262892b84be35fd7ff2481e86
font_01_sfnt_off0000e935.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE935 10656 bytes
SHA-256: 7edffdad6453c61310274d94fa93b7fcc9504452569d52f69af18af9f5b510e7

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