Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb172dfc82c1dcd8…

MALICIOUS

PDF

87.2 KB Created: 2021-05-10 14:44:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4a152c1e8e5d3e14f77baa7db6c7bcf SHA-1: 53a0de1f766fbb6bb7ed8e9923de44604e9fd65a SHA-256: eb172dfc82c1dcd83d17fd4775d601287a116bec678dc97b88740a1aa6cadc0c
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains a large number of external links, suggesting a link farm or a method to distribute further malicious content. The embedded URLs point to various PDF files hosted on different domains, likely intended to mislead users or for SEO manipulation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/strik?utm_term=macbeth+act+4+scene+1+language+analysis
    • https://gaxasexafarud.weebly.com/uploads/1/3/4/5/134590452/7510033.pdf
    • https://favonewe.weebly.com/uploads/1/3/2/6/132695639/toxolomeradileweweg.pdf
    • http://jofipifemu.medianewsonline.com/pictionary_rules_mattel.pdf
    • https://static.s123-cdn-static.com/uploads/4465537/normal_5fc9757321240.pdf
    • http://wipebodu.mypressonline.com/enciclopedia_de_botanica_gratis.pdf
    • https://static.s123-cdn-static.com/uploads/4451971/normal_5fdfff10b9729.pdf
    • http://dexiserabasavo.mygamesonline.org/87079487592.pdf
    • https://cdn-cms.f-static.net/uploads/4374708/normal_6018cdbfaad22.pdf
    • https://fosuxisemobiv.weebly.com/uploads/1/3/4/0/134000083/lulokulusemuk_nerujifeguruvi.pdf
    • https://widufosonetorif.weebly.com/uploads/1/3/4/5/134598319/fiwovepariz_nokokat_tifewug.pdf
    • http://ladekepevij.mygamesonline.org/51064398153.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://8964868a-aef6-4da0-9a9b-29de7c28e0c5.filesusr.com/ugd/b910ae_c31fb5bbc8b0498eafb63fd64b1a400b.pdf?index=true
    • https://uploads.strikinglycdn.com/files/7406049e-6dc8-4a08-b92c-6e869c243fc9/us_navy_dive_bombers_ww2.pdf
    • https://uploads.strikinglycdn.com/files/21fdc56a-1113-436d-80a5-be2bfcdbc3be/out_of_my_mind_sharon_draper_quotes.pdf
    • https://uploads.strikinglycdn.com/files/e34adcb5-3a65-4707-8a1b-ab20cd01842a/algorithmic_trading_strategies_book.pdf
    • https://c245485c-e1a4-4c5a-9a2a-c465a95e53c8.filesusr.com/ugd/25f824_ee49af09a4224f319009daf908552ac5.pdf?index=true
    • https://uploads.strikinglycdn.com/files/30f31895-8b0b-464d-9604-376cc2dfc085/how_to_tell_if_my_hot_water_heater_element_is_bad.pdf
    • https://uploads.strikinglycdn.com/files/7e348f06-102c-4ae9-a269-d3d8fa78924d/68496736020.pdf
    • https://e012ec00-e8e8-475f-a96b-80cab2ad705b.filesusr.com/ugd/3f1139_3ed57d8c9ebb49f2b13b99d5d419748f.pdf?index=true
    • https://ee6e56e8-c390-49d2-810b-d4defef8b9c1.filesusr.com/ugd/eda187_187f0246b18f4b56be09b497d5a08369.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011791.bin
1c6b7be0555cb5243f05afc15c68c52015a7664e437997ccda95bd8a1d1072b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11791 5352 bytes
font_01_sfnt_off000129e2.bin
689a689353fa2c305ce18c9eb2339208ec7a2809f86860ad306b6307fd763ca2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x129E2 10900 bytes

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