Malicious PDF — malware analysis report

Static analysis result for SHA-256 a16feefaed602b56…

MALICIOUS

PDF

92.8 KB Created: 2021-03-19 05:57:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2264b926cb47a19c6eb1f8c1769b37aa SHA-1: 77d342a20ddc6878eb20ede0d2b9d372234e4437 SHA-256: a16feefaed602b56fc35ca5126f892ef58f17814a0c03b6f2cd9c088a980602c
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a malicious domain, likely intended to deliver a phishing lure or malware. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. No scripts were extracted, but the presence of external URIs and the overall detection profile suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mezovuduw.ru/award?keyword=biotic+and+abiotic+ecosystem+pdf
    • http://varietystore.website/bmx_race_bikes_for_sale_facebookdqjgw.pdf
    • https://cdn.sqhk.co/tumosirewuw/ijbRZgd/21274413213.pdf
    • http://leadtop.co/big_eyes_small_mouth_3rd_edition1ybkz.pdf
    • https://cdn.sqhk.co/zesunotu/sjivgew/setadojumatopotarakagome.pdf
    • https://cdn.sqhk.co/pinofizulag/eighbic/96638371458.pdf
    • http://iqecoportal.ru/fopemamodimif7oy39.pdf
    • http://thelandofbadideas.com/gina_asma_2018_indonesiacz0h2.pdf
    • http://noxerazomefo.iblogger.org/mavixopimutawanu.pdf
    • http://moxipafuxoxo.mygamesonline.org/bulubajewozuve.pdf
    • http://sutirew.22web.org/python_programming_in_cyber_security.pdf
    • http://baugroup.info/what_to_look_for_when_buying_a_laptop_for_work25cn5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://mefinuxewo.epizy.com/waltz_no_2_sheet_music.pdf
    • http://dovabaz.epizy.com/cartella_clinica_formato_digitale.pdf
    • http://kekokid.epizy.com/dove_press_author_guidelines.pdf
    • http://labosixu.rf.gd/woxuzejugazorolawogufalow.pdf
    • http://bigapenegig.atwebpages.com/88212352828.pdf
    • http://ravigokabuf.rf.gd/nafawomifebuvujawaduk.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_off00012b9e.bin
af134436972e385c76e1088a60600da8f29dc14ad6d9037461d56c670e905778
pdf-font-stream PDF embedded font (sfnt) at offset 0x12B9E 5464 bytes
font_01_sfnt_off00013e29.bin
51fdb8c51c152c4fad60e546fb9270a67baa247a7c56a677829cd5acd918568c
pdf-font-stream PDF embedded font (sfnt) at offset 0x13E29 12520 bytes