Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1cb0bfe8e95de32…

MALICIOUS

PDF

75.5 KB Created: 2021-04-30 07:13:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 348150d54fe314a23aaeb95953f781ab SHA-1: 0534a2f2fc3989e06a302613373adb33705874de SHA-256: d1cb0bfe8e95de32d0eeb98fb4e7ca73fab9bf23a7608a7e14d55b994b0767d8
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, with one prominent URL pointing to 'dugedepap.ru'. ClamAV and ML classifiers flagged this PDF as malicious, specifically as a phishing trojan. The presence of numerous external links suggests an attempt to redirect users to potentially malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://dugedepap.ru/strik?utm_term=go+tell+it+on+the+mountain+song+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380090/normal_6056adb6d1f19.pdfIn PDF document text
    • http://kudretbozaci.com/what_is_the_right_triangle_formulakh25c.pdfIn PDF document text
    • http://top-agent.ru/alcatel_go_flip_manual_koodoxahs5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447087/normal_5fdc73f47fc3e.pdfIn PDF document text
    • http://klosheff.xyz/guidelines_for_medical_assistance_in_pa8fvmc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403808/normal_5ff8b534b8d9f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tapogexolewiji.epizy.com/94082593648.pdfIn PDF document text
    • https://18bc7be3-897e-46c1-a475-efc190d089bd.filesusr.com/ugd/62845f_60104614e79a4031a92af768578c60a6.pdf?index=trueIn PDF document text
    • http://magetamuwunaze.rf.gd/guidecraft_dress_up_cubby_center.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/email_guide_mystic_messenger_rui.pdfIn PDF document text
    • https://db38eef3-7d65-43a4-badd-ba39ed7d9417.filesusr.com/ugd/bd2483_2a871ce10d624672bf4b21e81301d64f.pdf?index=trueIn PDF document text
    • https://6739ca04-605d-4ff4-b4c9-4e5bd75a7819.filesusr.com/ugd/031dda_57c7f99b98de46509a43ddf7dfd3f795.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/kazorogigiwetozuxuwamirur.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/ben_10_animation_tamil_dubbed_movie.pdfIn PDF document text
    • http://sakigekoxigukil.epizy.com/jamapeselojilar.pdfIn PDF document text
    • https://790985df-dfec-4a08-b509-00f37668cf87.filesusr.com/ugd/a421e3_6f5e62a9ae954358b2596140e3532682.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/ladagabudolifesikovozovoj.pdfIn PDF document text
    • https://cf075d60-af7c-4c71-a16c-5c8c125a9bb7.filesusr.com/ugd/cc03df_3970125097ff42e6822d1400a9353aea.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/liluvad/51291039053.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/lozezineji.pdfIn PDF document text
    • https://s3.amazonaws.com/luborinizu/the_landlady_analysis_essay.pdfIn PDF document text
    • http://kotidaw.epizy.com/chartboost_android_sdk.pdfIn PDF document text
    • http://ritubadobonesog.epizy.com/beauty_and_the_beast_book_cover.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_off0000e893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE893 5388 bytes
SHA-256: 201d75927baa322f6af4153896cdf6f027a1faf82cd72241d27e403cd084e16f
font_01_sfnt_off0000fabf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFABF 10980 bytes
SHA-256: 856454b611ec179e211e9a27197082fab7d5685d161ef73946d1189b0796a7e5

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