Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cd3237c432a08a1…

MALICIOUS

PDF

243.9 KB Created: 2021-03-19 22:51:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 331117e1b4257cacb238c5bc4e44e0d3 SHA-1: 07167ed9b3ce20324bc2edf3a2534f369378e8d2 SHA-256: 4cd3237c432a08a1c9ad9615134c41ff86e52e9f5e339cf176f1c1ad26dfee02
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a machine learning classifier and ClamAV, indicating malicious intent. It contains an embedded URI pointing to 'resalured.ru', which is likely used to host a phishing page or distribute further malware. The document body, though heavily obfuscated, suggests a lure related to 'mount and blade warband modding guide'. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9547

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://resalured.ru/wix?keyword=mount+and+blade+warband+modding+guide PDF link annotation
    • http://doweryklkq.space/how_to_play_electronic_drums_for_beginnerseju6i.pdfIn PDF document text
    • http://gixipures.sportsontheweb.net/chinese_alphabet_free_download.pdfIn PDF document text
    • http://copyrighthelp.info/88608364533tnqcf.pdfIn PDF document text
    • http://rikafitamedad.medianewsonline.com/angle_of_elevation_problems.pdfIn PDF document text
    • http://copyrightreports.com/audre_lorde_poetry_is_not_a_luxury_citation9z5qo.pdfIn PDF document text
    • http://namafafiteg.mypressonline.com/april_2020_current_affairs_insights.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lefegosab.epizy.com/16258381109.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/ge_spacemaker_microwave_fan_not_working.pdfIn PDF document text
    • https://s3.amazonaws.com/tolivajupeku/artists_way_julia_cameron.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/47661435980.pdfIn PDF document text
    • http://zegetafirotazaz.atwebpages.com/digital_marketing_journal.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/awards_for_all_application_form_scotland.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/43366211154.pdfIn PDF document text
    • https://s3.amazonaws.com/kalanejaxutilif/69764643889.pdfIn PDF document text
    • http://pewinajak.epizy.com/new_simple_english_grammar.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/90145565553.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/zoromibazaxasirizaro.pdfIn PDF document text
    • http://fozijasorizol.epizy.com/sozed.pdfIn PDF document text
    • http://ramogefakox.rf.gd/assamese_film_junbai_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/wovigebi/picsart_apk_old_version_4._5._3.pdfIn PDF document text
    • https://s3.amazonaws.com/xalasawu/17469022071.pdfIn PDF document text
    • http://dojeguxe.rf.gd/phonetic_alphabet_used_in_airlines.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/mame4droid_0.139_u1_roms_free_download.pdfIn PDF document text
    • http://xologikaju.atwebpages.com/madodozupipaf.pdfIn PDF document text
    • https://s3.amazonaws.com/sojenozap/rafobabijejes.pdfIn PDF document text
    • https://s3.amazonaws.com/gusule/franny_e_zooey_salinger_recensione.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_off0003832f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3832F 5204 bytes
SHA-256: 20322c84167917b471866d5afa1759e39807d6dc453db38f955721c7cbdcabec
font_01_sfnt_off000394e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x394E6 12624 bytes
SHA-256: eee24f98ede170ca00615be3c603bb6a44720fdc39afaba4709c248c3075e5ad

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