Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ea3408195b4155b…

MALICIOUS

PDF

77.4 KB Created: 2021-03-30 15:41:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 106a9b6a64dcf231b78661983dd27201 SHA-1: 746addec03cb1b608b6942a2e02ff8eb7da09087 SHA-256: 6ea3408195b4155b3484c68a184c99f39dee4c15c58bd1eeb3b11b3334dd743d
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are hosted on dynamic DNS services, suggesting a link farm or phishing operation. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and heuristic firings point towards the exploitation of PDF vulnerabilities or social engineering to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://soxebez.ru/aws?utm_term=danby+4.4+mini+fridge+reviews
    • https://sobanuwutotamiw.weebly.com/uploads/1/3/4/1/134131644/8420951.pdf
    • https://cdn.sqhk.co/dasoxitif/HjgjaWu/orange_money_niger_transfert_international.pdf
    • https://kodidorimo.weebly.com/uploads/1/3/1/3/131380292/1483897.pdf
    • http://tivepijezar.22web.org/53083147271.pdf
    • https://cdn.sqhk.co/zeboxuze/dhhhaqj/72762689001.pdf
    • http://xigotev.iblogger.org/11361898555.pdf
    • https://mapikomuxet.weebly.com/uploads/1/3/4/5/134579134/zemizunajumifex-wilip.pdf
    • https://vuguzakinizole.weebly.com/uploads/1/3/4/4/134493236/1987180.pdf
    • http://lodujenoxo.iblogger.org/weekly_hourly_schedule_template_excel.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dijawazuk.rf.gd/49982427452.pdf
    • http://desiwafinu.epizy.com/1920s_party_invitation_template_free.pdf
    • http://notafagojoxun.epizy.com/system_dynamics_2nd_edition_solution_manual.pdf
    • https://f33eab34-52c4-4f1b-91c9-7c5ec1255b8f.filesusr.com/ugd/9d0374_cbe57bf72ad6402f897b349784378575.pdf?index=true
    • https://770ad53b-b55e-4e58-b1eb-3709f41304f7.filesusr.com/ugd/98e298_25f903c97a2346819c5978212060e3be.pdf?index=true
    • https://3f9320ff-391d-49df-b192-c557e211a93c.filesusr.com/ugd/469aea_b8deb33499ab46bab73cc739378b743f.pdf?index=true
    • https://9505ca4c-dfdc-4941-8fde-ded35496d0c9.filesusr.com/ugd/2097ab_46c6de06337246ecbabbdd0dec580081.pdf?index=true
    • https://43a98339-0465-49d0-a416-8cef4780896f.filesusr.com/ugd/89258f_2861b877c59849739aa16b5bdb3c6d93.pdf?index=true
    • http://bisiziwaros.epizy.com/isometric_drawing_program_free.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_off0000eef7.bin
3573d11f864fdf1f9b605fef750f98fe6e47762cf278d0b06bf4738e0f48a33b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF7 5708 bytes
font_01_sfnt_off00010281.bin
0abf799f4c35f4e43f94c1ce1e5e66f7c4ce386950e6188920ed2a9a4dd7624d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10281 11204 bytes

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