Malicious PDF — malware analysis report

Static analysis result for SHA-256 b57ca7d37a9408ad…

MALICIOUS

PDF

93.1 KB Created: 2021-05-04 03:57:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 431bd432268bdce9e9046749a22291cb SHA-1: 5050d6f453f1f333878540dd252d4e2753809dec SHA-256: b57ca7d37a9408ad20158c7c4130c304f4f0efc701da7592c00803d81a723df5
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://bologen.ru/strik?utm_term=queen+of+shadows+hulu+casting+call PDF link annotation
    • https://jufesuzukexo.weebly.com/uploads/1/3/5/2/135294717/70bfcd7b9d323.pdfIn PDF document text
    • https://cdn.sqhk.co/dutaxato/jgYjeGI/68361809336.pdfIn PDF document text
    • https://cdn.sqhk.co/kifuzopeko/eiiLUha/newiwagezijajotuwutiwefu.pdfIn PDF document text
    • https://cdn.sqhk.co/gutejalajige/bgfjciU/megan_rapinoe_net_worth.pdfIn PDF document text
    • https://sidafixeruj.weebly.com/uploads/1/3/2/6/132681612/18095a11026085e.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/juwofuxufijup/nawawonu.pdfIn PDF document text
    • http://bupelasupur.epizy.com/xuviperokiselarar.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/what_does_an_early_dinner_means.pdfIn PDF document text
    • http://vujapaporetakik.epizy.com/the_last_song_book_read_online_free.pdfIn PDF document text
    • http://ditelaxi.rf.gd/pojiwotunuwimilo.pdfIn PDF document text
    • http://fumibomi.epizy.com/dls_18_all_logos.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/guidelines_pneumonia_2018.pdfIn PDF document text
    • http://fuwotatikiluwa.epizy.com/84749628177.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/rutitiliginuzil.pdfIn PDF document text
    • https://s3.amazonaws.com/lowebemuwojiso/create_z_score_table_in_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/8015274007.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/taselobojo.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/bitmap_to_imageview_android.pdfIn PDF document text
    • http://mitefunigesito.rf.gd/phone_number_blacklist.pdfIn PDF document text
    • http://jatomije.rf.gd/fetch_your_news_fannin_arrest_report.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012f00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F00 5340 bytes
SHA-256: 20b6ed0d937588aa94f225bf911a9be69c8e46b01b36ed524b859c563960ab1f
font_01_sfnt_off00014147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14147 11436 bytes
SHA-256: 4d0f7c0a0d2f5edc69d9407bc636029cc70622ac7fefe284e0fd00ee2e2c7184

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