Malicious PDF — malware analysis report

Static analysis result for SHA-256 0abae4d5d1b2b55a…

MALICIOUS

PDF

81.5 KB Created: 2021-04-02 23:01:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: d946088ba03c123aba875b2c791a008d SHA-1: e0aaeaf3d881b916b459d3352a9863d73bb8f647 SHA-256: 0abae4d5d1b2b55abef1076bf4487fe9e30f7c0082031c5231b2a39acc7e0dab
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many hosted on disposable domains, indicating it functions as a link farm. The heuristic 'PDF_SEO_LINK_FARM' and the presence of numerous unknown reputation URLs strongly suggest a phishing or malware distribution attempt. While no scripts were explicitly extracted, the ML classifier and ClamAV detection confirm malicious intent, likely involving JavaScript execution within the PDF to facilitate these redirects.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/strik?utm_term=pharmaceutical+organic+chemistry+2+pdf PDF link annotation
    • http://bizewisa.iblogger.org/what_is_a_35_caliber.pdfIn PDF document text
    • http://xodaxobomefawod.iblogger.org/abirami_anthathi_with_meaning_in_tamil.pdfIn PDF document text
    • https://titugujogimob.weebly.com/uploads/1/3/4/0/134017720/jibifenowafe.pdfIn PDF document text
    • http://wildboost.club/23615403723d9vd2.pdfIn PDF document text
    • https://jazawimap.weebly.com/uploads/1/3/5/3/135346256/ad3463c40c085.pdfIn PDF document text
    • https://taxudomajifi.weebly.com/uploads/1/3/4/1/134108655/1189038.pdfIn PDF document text
    • https://fasexunatosupa.weebly.com/uploads/1/3/1/6/131606354/4853663.pdfIn PDF document text
    • http://de-bewertung-id-q2e5t23.top/jupunuwomerogobakxcdm.pdfIn PDF document text
    • https://zixavuxo.weebly.com/uploads/1/3/1/3/131398386/zofepofuwu_barefono.pdfIn PDF document text
    • https://tapinizeguzuj.weebly.com/uploads/1/3/4/4/134456840/ladigozarosubisib.pdfIn PDF document text
    • https://jafipununevov.weebly.com/uploads/1/3/0/8/130814040/xoxefe.pdfIn PDF document text
    • https://bafovulik.weebly.com/uploads/1/3/1/0/131070506/2920020.pdfIn PDF document text
    • https://losewilim.weebly.com/uploads/1/3/4/8/134854933/cbb480ecbd0e8.pdfIn PDF document text
    • http://reduslim-eu.site/premiere_pro_effects_tutorial22a3q.pdfIn PDF document text
    • http://richteam.site/90336831227hiyc9.pdfIn PDF document text
    • https://malomunadososep.weebly.com/uploads/1/3/5/3/135351096/tuxawuninedijofu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nadefivetokilak.rf.gd/pinonukef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e1842a0-ebc3-41c5-a836-507a9b597c34/ryobi_drill_press_vise.pdfIn PDF document text
    • http://pobediwawe.epizy.com/408550065.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17833612-a47d-4b41-b7a1-72efce2e05ac/22778650058.pdfIn PDF document text
    • http://bogigipoja.epizy.com/59819601893.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcbb16f6-4486-4bad-8be2-dcf0205d1eb9/mcgraw_hill_my_math_grade_5_volume_2_teacher_edition.pdfIn PDF document text
    • http://faduzidivatakid.epizy.com/xujufuxuvisinezufur.pdfIn PDF document text
    • http://sejibuka.epizy.com/hp_black_printer_test_page.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19f163e6-edc3-4478-a467-29b0f9719add/25560816414.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e036ac3b-596e-409b-93bb-bff4d78bcf03/25047192360.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e91c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE91C 5804 bytes
SHA-256: d9408beb071469721d2ccb5160fc7700b1bc889e24dd0dfb5fee4b6f31a52d43
font_01_sfnt_off0000fcc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC8 10696 bytes
SHA-256: ce8cfab328f84535698df8d60d68aaade0d9c879501a133dcd5b4073f0e9f3f8
font_02_sfnt_off0001217e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1217E 16076 bytes
SHA-256: daf1883492d64eb2830cc8eabcc582def4ae9ce6a05fcd400af63bb13c14892d

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