Malicious PDF — malware analysis report

Static analysis result for SHA-256 703d7c1e942cee48…

MALICIOUS

PDF

72.8 KB Created: 2021-03-11 21:46:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 7d652b5fc2eb7ffc773207d77fa883d2 SHA-1: 1d49a483499b5eeafc4782c86b1d757869cbda37 SHA-256: 703d7c1e942cee48d9e97a889b746f4719b3df7b8a0558040de94b5dcc5e578a
164 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating a link farm and a lure for a download button, pointing towards a phishing or scam attempt. The primary URL, 'https://resalured.ru/award?keyword=mah+cet+2020+result+pdf+download', is presented as a search result, likely to trick users into clicking it. While no scripts were extracted, the PDF structure and external links suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://resalured.ru/award?keyword=mah+cet+2020+result+pdf+download PDF link annotation
    • https://cdn.sqhk.co/sedazozesufu/ijhghir/drive_safe_colorado_coupon_code.pdfIn PDF document text
    • http://todaxip.iblogger.org/what_are_the_best_business_ideas_in_kenya.pdfIn PDF document text
    • https://cdn.sqhk.co/naludibeg/dgc1xhf/shadow_fighting_hero_war_mod_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/hxjhoAZ/27401076418.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/nowonovege/65934251031.pdfIn PDF document text
    • https://d6aab468-caab-4d9e-910f-d3bf64ae4104.filesusr.com/ugd/5438e3_1ac0ac6ea758489187c12d3460c244ba.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/cyanogen_apk_latest_version.pdfIn PDF document text
    • https://s3.amazonaws.com/luxaduzimase/90516501527.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/fapubuwuruvovenalujawobu.pdfIn PDF document text
    • https://9afb1793-bc57-4514-bb46-74e980466609.filesusr.com/ugd/11f207_e90fb6c56c48433fa598fc37aa4f0e89.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/dubaxasujamuniwop.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/starch_gelatinization_lab_report.pdfIn PDF document text
    • http://goduzidexemave.epizy.com/upper_limb_arterial_doppler_waveforms.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/guitar_chords_for_hindi_songs_in_sa_re_ga_ma.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/best_english_hd_movies_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nupotukig/advanced_trumpet_solos.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/52099617161.pdfIn PDF document text
    • https://1a441fb4-51dd-4528-a053-eb59ff664e18.filesusr.com/ugd/43d9d5_aef3327a56914251a5a401c8526c5c2a.pdf?index=trueIn PDF document text
    • http://nuvotadaxiti.epizy.com/vanilla_twilight_instrumental.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/counter_strike_nexon_zombies_for_pc.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_off0000df1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF1D 5616 bytes
SHA-256: f918c91fc03b931bc8c6fbb58d35536648ac6c75f68dc427453b33a8fdf55917
font_01_sfnt_off0000f259.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF259 10412 bytes
SHA-256: b5ed89cffe79b60e82968af53c4bf5413d25ea4693e08d309bef76d9b0f22daf

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