Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3dcb06776b9d876…

MALICIOUS

PDF

93.8 KB Created: 2021-04-20 05:45:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64f2002b48eb888169fa9d9dde48a462 SHA-1: 7672d2785bd48c8757471e3de498572e3d720835 SHA-256: b3dcb06776b9d8763a851fc7706dc89b5506eaf4f33947b5b4d06fdb43841d25
96 Risk Score

Malware Insights

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

The PDF file contains an external URI pointing to a malicious domain, disguised with a lure related to "Rick and Morty comic book volume 1". ClamAV and ML classifiers also flagged this file as malicious, specifically as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/strik?utm_term=rick+and+morty+comic+book+volume+1
    • https://zetaxufonepijak.weebly.com/uploads/1/3/4/3/134353616/7e36cc2dfaafe.pdf
    • https://cdn.sqhk.co/tegasipitif/azBx0CI/bunaposajaruvoj.pdf
    • http://appeal-ig.com/75944739932n6ydu.pdf
    • http://bibotabelik.22web.org/what_are_the_key_concepts_of_cognitive_social_learning_theory.pdf
    • http://wurenuzuludesu.22web.org/xidiz.pdf
    • http://sawegazid.iblogger.org/android_9_lg_v30.pdf
    • http://lamovingcompany.com/38946737001d1xyd.pdf
    • https://pekupepavipojev.weebly.com/uploads/1/3/1/8/131872203/zesedowor-timovez-konij.pdf
    • http://1xbet-football.fun/not_driving_car_during_covidlmpfv.pdf
    • http://design-kvartira.info/7667837477418iqu.pdf
    • http://puzufogekok.22web.org/degagopusejopekanamazen.pdf
    • http://hookup671.site/venn_diagram_template_with_linesqi867.pdf
    • https://maloxozalujov.weebly.com/uploads/1/3/4/6/134624338/e43d1613fd6a.pdf
    • https://tabupuja.weebly.com/uploads/1/3/4/6/134647436/6f7f86e0b2616.pdf
    • https://sidutoxa.weebly.com/uploads/1/3/4/8/134886075/joxiwog-gumemero.pdf
    • http://antonioit.fun/nizesww9ht.pdf
    • https://cdn.sqhk.co/jigugabopu/EkVjbgi/the_survival_game_apk.pdf
    • https://cdn.sqhk.co/tunuravaxoxi/iSp4gfE/rowidovetukexifujawem.pdf
    • http://pumba.fun/exercise_program_in_formal_attire_crossword_cluebze8l.pdf
    • https://cdn.sqhk.co/zivuputid/dig2hiu/self_evaluation_job_performance_sample.pdf
    • http://tokio-2020.fun/wosomop93f81.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sefaweme.rf.gd/53913762300.pdf
    • http://vujiwexamofone.rf.gd/20681532134.pdf
    • http://xepolowamozuxan.rf.gd/vuludonarelalakusezib.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_off00012d65.bin
3c2661c775b817f809f7a3c532eec559faef6fe925b328d37a1ca2d1e1997326
pdf-font-stream PDF embedded font (sfnt) at offset 0x12D65 5332 bytes
font_01_sfnt_off00013f8c.bin
6071e92cdde036e281290a10eae6159c8d038c4def4473345d9778055dd5a655
pdf-font-stream PDF embedded font (sfnt) at offset 0x13F8C 11892 bytes