Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b3443eabd7df9e6…

MALICIOUS

PDF

72.7 KB Created: 2021-03-01 09:41:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 9847941818d5e2e3102fb8ecedb131de SHA-1: 11dbba6edbcebd63e595c84b5d9ea5ac3a87cf73 SHA-256: 6b3443eabd7df9e688775f166f373b7c68870601244edbbff3b6668b184b7d37
156 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to suspicious domains and are flagged as part of a link farm. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an attempt to manipulate search engine results or distribute malicious content. The ClamAV detection and ML classifier further support its malicious nature, likely for phishing or malware distribution.

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 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.
  • 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://ponafet.ru/strik?utm_term=korg+er-1+manual PDF link annotation
    • https://xojurumute.weebly.com/uploads/1/3/5/3/135328527/e48d3a6.pdfIn PDF document text
    • https://nejajabowiwuxo.weebly.com/uploads/1/3/0/7/130775705/7406395.pdfIn PDF document text
    • https://cdn.sqhk.co/pekotegafod/haigp2L/vaxisiki.pdfIn PDF document text
    • http://dkblogin-de.best/fishing_diary_ios_downloadi6mjh.pdfIn PDF document text
    • http://mists.space/wheels_on_the_bus_free_video2ecrc.pdfIn PDF document text
    • http://strahauto.website/wexedomitizurobo3yjmo.pdfIn PDF document text
    • https://fonekukiko.weebly.com/uploads/1/3/5/3/135393218/4706753.pdfIn PDF document text
    • https://cdn.sqhk.co/jenojigise/gOquHgf/picsart_photo_studio_light_app_download.pdfIn PDF document text
    • http://golulim.iblogger.org/nijarelodavovubesaga.pdfIn PDF document text
    • https://cdn.sqhk.co/ripalufix/HczXfhe/27896012553.pdfIn PDF document text
    • https://cdn.sqhk.co/kataregulu/6hjj7gi/33415525363.pdfIn PDF document text
    • http://getplafond.xyz/diy_batters_box_templatemreu2.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/zarusegibitumet/the_book_of_noah_full_movie_youtube.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/electrocardiogramme_pathologique.pdfIn PDF document text
    • https://s3.amazonaws.com/jivala/uncle_ato_mensuro_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/nojetefudagaluxuwugovin.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/freelance_writer_website_template.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/hitachi_c10fsh_parts_list.pdfIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/canadian_occupational_performance_measure_reference.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_off0000e0a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A7 4880 bytes
SHA-256: a47f0b1fba91fa0867f56251013af538cd05652cc7c55b7ac2473f2a1ef65cb7
font_01_sfnt_off0000f13b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF13B 10336 bytes
SHA-256: 00486c3f15577b42f6542248a43f459064feeef99c1284fdf701e0a4fb8f9fef

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