Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d94416e3d47dc4b…

MALICIOUS

PDF

85.8 KB Created: 2021-02-17 12:44:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 0a3f3173e57ec71e407a78feb5f64459 SHA-1: 167e668f1bc18e4ab1570fdd0c5d3e6b8c3bf88c SHA-256: 2d94416e3d47dc4b8e1c840dad2cad0f1c9e8ab4ad0839e2c4ae68aa016a97bb
146 Risk Score

Malware Insights

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

The PDF contains a high number of embedded URLs pointing to various domains, many of which are hosted on disposable or suspicious domains, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. While no scripts were directly extracted, the PDF structure and numerous external links are indicative of a malicious document designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://jacksth.ru/123?utm_term=betrayal+at+house+on+the+hill+player+expansion PDF link annotation
    • http://vobefoli.iblogger.org/happier_ed_sheeran_piano_sheet_music_free.pdfIn PDF document text
    • https://cdn.sqhk.co/wemorapi/sBLWwjd/funny_videos_try_not_to_laugh_impossible_clean.pdfIn PDF document text
    • https://cdn.sqhk.co/videmixolute/BjcjhyY/47648028822.pdfIn PDF document text
    • https://cdn.sqhk.co/wenewojufaj/cqiaMhg/35778651668.pdfIn PDF document text
    • http://my-favshopd.online/2010_audi_a5_convertible_top_manual_operationmx0w5.pdfIn PDF document text
    • https://cdn.sqhk.co/fegujajox/hgihiax/rowefegidofoxemezed.pdfIn PDF document text
    • http://xazivigufimu.22web.org/ard_mediathek_app_smart_tv.pdfIn PDF document text
    • http://frankiearvelo.com/rufus_wainwright_hallelujah_piano_sheet_music9ih8u.pdfIn PDF document text
    • http://golifidisonopat.iblogger.org/wetarufatowuwakob.pdfIn PDF document text
    • http://heleogose.online/bcbs_federal_pre_authorization_formks83i.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://dogamesesokuj.rf.gd/nowisasif.pdfIn PDF document text
    • http://fegelefuxenitud.rf.gd/english_grammar_one_word_answer.pdfIn PDF document text
    • http://kunivoji.epizy.com/lamborghini_chalai_full_video_song.pdfIn PDF document text
    • http://rufopanapoxo.rf.gd/51423251687.pdfIn PDF document text
    • http://lisotabisalak.epizy.com/32265561349.pdfIn PDF document text
    • http://bumilamufitilu.epizy.com/authorisation_dealer_certificate_format_in_word.pdfIn PDF document text
    • http://wudokuzogikozu.rf.gd/cushing_s_disease_endocrine_society_guidelines.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECF9 7572 bytes
SHA-256: 2826d61c64ab23ec14866328e2cf2f183342765ed0b8dbc2df490c61f7e532a9
font_01_sfnt_off000105e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105E8 5008 bytes
SHA-256: ea0d57275a78ea894f14a755abc6ec48be30fbce1ba23db1e1f8e6cbced94328
font_02_sfnt_off000116ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116ED 10588 bytes
SHA-256: dbb7a51201558322b9c7f737d2875e69a478a2075b5e35e4f1580e2a7ebd9714
font_03_sfnt_off00013b19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B19 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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