Malicious PDF — malware analysis report

Static analysis result for SHA-256 e76516dfa500264c…

MALICIOUS

PDF

95.7 KB Created: 2021-02-22 12:55:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 11b18f1f284ced5dc7c3eacd868756a2 SHA-1: e4d422e0d5e98bae3d03d412e853b92ac581c7f8 SHA-256: e76516dfa500264c97a1ed6bc7d9505ffb65a870be4605937ec1bb8f417d1756
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which point to disposable domains and are part of a link farm, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious activity, likely aiming to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/aws?utm_term=what+kind+of+bond+is+potassium+nitrate+brainly PDF link annotation
    • http://tersq.fun/movie_review_presentation_rubricbncm6.pdfIn PDF document text
    • http://healsmall.space/history_is_all_you_left_me_epubieqvk.pdfIn PDF document text
    • http://fuguzelinufi.22web.org/pesoxolematebolasodogenu.pdfIn PDF document text
    • http://bosnoslovnoejelaniekupit.xyz/answer_key_2019_upsc_csat2qpcr.pdfIn PDF document text
    • http://stavki-na-sport.site/dufapotiwuzutakotefiwufun77gyp.pdfIn PDF document text
    • http://quickpapp.online/video_player_for_laptop_windows_7sqn7j.pdfIn PDF document text
    • http://bioforce-co.site/xeduzogigogavofezerifakd82a9.pdfIn PDF document text
    • http://biggymstoe.com/582000680294gysd.pdfIn PDF document text
    • http://osthondroz.com/what_do_a_check_look_likehcefy.pdfIn PDF document text
    • https://vezitiratad.weebly.com/uploads/1/3/1/8/131856143/a509410880.pdfIn PDF document text
    • https://dexisuliraj.weebly.com/uploads/1/3/5/3/135346252/33b25e9385.pdfIn PDF document text
    • https://nixejinalir.weebly.com/uploads/1/3/4/3/134321479/7bb7792c6390.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/bezorito/rizifimagupejakes.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/avery_labels_template_l7162.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/emotional_status_marathi_video.pdfIn PDF document text
    • http://jejuton.rf.gd/52774652210.pdfIn PDF document text
    • http://gojaxuga.epizy.com/bonafide_certificate_for_school.pdfIn PDF document text
    • http://bawujirilo.epizy.com/besharam_movie_worldfree4u.pdfIn PDF document text
    • http://biwewija.rf.gd/xizabirupo.pdfIn PDF document text
    • http://fizanotafogibag.rf.gd/batman_1989_movie_in_tamil.pdfIn PDF document text
    • http://wamebebubo.rf.gd/belkin_n750_db_wireless_dual-band_n_router.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_off00013996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13996 5600 bytes
SHA-256: 044b7fb2ab2549bb85dbd88cc6825fe9aab55ab31abfc5f9bcbbdf319445de0a
font_01_sfnt_off00014c84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C84 10716 bytes
SHA-256: 31b63c95e5621bba4f94ff6c46e7ec06016185e1d0d15cf92f914370464e7ec5

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