Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a22a429f68e2a6f…

MALICIOUS

PDF

74.9 KB Created: 2021-03-18 08:08:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f8a13b5268a6353a8721c7cd380c8fa SHA-1: d4ef2752ec9bceea0ad7474b6ac3be81cf4d95f9 SHA-256: 6a22a429f68e2a6fe289fb3b7b0cdaf241f09430f3a9157dca471c0ddfe01b76
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a ML classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, which is likely used to host a malicious payload or redirect to a phishing site. The document body, though heavily obfuscated, suggests a lure related to educational material, which is a common tactic for phishing and malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/wix?keyword=urinary+system+review+worksheet+answers
    • https://cdn.sqhk.co/dusujukakal/ijcLVgg/popajotigex.pdf
    • http://sutovuresas.mygamesonline.org/yard_machine_lawn_mower_550ex_oil.pdf
    • http://reduslim-italiaoficial.site/real_followers_for_instagram_2020xljmi.pdf
    • https://cdn.sqhk.co/xagaxubibiz/Vijjjhh/90670906330.pdf
    • http://olymptrade.buzz/what_is_a_better_word_for_first1lvot.pdf
    • http://onlinekartiadesi.com/dibasitoligituzm1whi.pdf
    • http://helplnstagramcontact5087423.com/biomedical_science_graduate_cv_template9s1ze.pdf
    • http://futajef.medianewsonline.com/electromagnetic_induction_and_alternating_current_notes.pdf
    • http://maykistore.ru/legisexetexopagugufodq2ybw.pdf
    • http://copyrighthelpbusiness.net/naxetonivudzzm84.pdf
    • http://hidver.com/72819010162nk8zz.pdf
    • https://cdn.sqhk.co/wijenipa/g9njjAo/goleraxebujoxujamemokaw.pdf
    • http://digitalliteracyinstitute.com/lowrance_elite_7_ti_manual2vrs2.pdf
    • http://salonvarna.com/mircea_eliade_religionl7j23.pdf
    • http://zabovawupe.mypressonline.com/proyecto_de_investigacion_sobre_alcoholismo_en_adolescentes.pdf
    • https://cdn.sqhk.co/mowanideju/hifc5g5/gopeneposuvebolodad.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fotepopunaj/tajiwasedabejewu.pdf
    • https://s3.amazonaws.com/pizivurapab/android_9_navigation_bar_app.pdf
    • https://s3.amazonaws.com/gelawiweza/78302691589.pdf
    • https://s3.amazonaws.com/kelageketisefuv/primavera_risk_analysis.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7a9.bin
61523c5bba655563421076e4c404791a5d44ac6f59096716cca7b44344dd4402
pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A9 5200 bytes
font_01_sfnt_off0000f948.bin
af3c493a7bb22cbc2ffba082abe169e097273690f50d6caec137c788a0e05ea6
pdf-font-stream PDF embedded font (sfnt) at offset 0xF948 10784 bytes