Malicious PDF — malware analysis report

Static analysis result for SHA-256 a773daab151d206b…

MALICIOUS

PDF

84.1 KB Created: 2021-03-19 17:51:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 24de0003004f65c5fe33ffba4309a5c7 SHA-1: 577dfee0b4e7bb269a214212c87ec72265f6f06a SHA-256: a773daab151d206b8c0910b2cc519e21df5e433292a42a10fa4bc8eb6fda84fd
156 Risk Score

Malware Insights

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

This PDF file is classified as malicious and contains numerous external links, forming a link farm designed to redirect users to potentially harmful websites. The primary lure appears to be related to watching movies online, as indicated by the URL containing 'dinotopia+movie+watch+online'. The presence of multiple PDF links suggests an attempt to distribute further malicious content or engage in SEO manipulation for phishing purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://zajinet.ru/wix?keyword=dinotopia+movie+watch+online PDF link annotation
    • https://volufijipezuji.weebly.com/uploads/1/3/4/7/134703795/7072513.pdfIn PDF document text
    • https://xuvodovujekezoz.weebly.com/uploads/1/3/5/9/135957716/jilusikewemanik.pdfIn PDF document text
    • https://cdn.sqhk.co/dezorevukor/ib6Ddig/std_10_gujarati_textbook_download_ncert.pdfIn PDF document text
    • https://cdn.sqhk.co/vifejoneses/Jjdhijg/76197250709.pdfIn PDF document text
    • https://cdn.sqhk.co/xijogedobu/hfTXifi/33161329926.pdfIn PDF document text
    • https://likifovufuli.weebly.com/uploads/1/3/4/5/134588617/bajunatugoze.pdfIn PDF document text
    • https://cdn.sqhk.co/rorajakura/Zgc7nE9/jitikiselo.pdfIn PDF document text
    • https://cdn.sqhk.co/verexumifo/ddojhpu/wogopu.pdfIn PDF document text
    • https://mudagetani.weebly.com/uploads/1/3/4/3/134381332/zepadolojewu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fb7344a-8889-4d84-ab35-9af725bd1b7f/rival_deep_fryer_power_cord.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9db0090-2392-42eb-88d9-d9b2f71479e7/98392305964.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0ac42e2-d371-4a6a-b64f-88c8f20ec946/murojunufojerefawanu.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/watch_stephen_kings_rose_red_free_online.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/wusegas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67a797a9-3b82-4f6d-94aa-8c266cd63ebe/how_much_oil_does_a_honda_gcv160_take.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec8898b4-875e-4d12-8cb9-fe80966321ee/xevavikepodeneme.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/android_module_types.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/gaderokumofezijetakige.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/pajudebumorakuxajitanozi.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_off00010bb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BB9 5052 bytes
SHA-256: c3d11441d1cc040827e0a10381d2942ace6a75c10377077cd944c693d19177f2
font_01_sfnt_off00011cdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CDF 11316 bytes
SHA-256: 780da1e1c8cf6a14631570eed7837340689545010725b3ff455e8a24f77b7a29

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