Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ad4368341077d25…

MALICIOUS

PDF

81.5 KB Created: 2021-02-25 17:50:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 894d20328a26917eacad7c147f5f4569 SHA-1: 24f74564f2fa7ff6071f67e39eaea11a7668f1b8 SHA-256: 0ad4368341077d25d7f55b41b9f976b387dba18ddc76eae8eadecfa5802fdc62
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is designed to host numerous links on disposable domains, pointing towards a phishing or malware distribution scheme. The embedded URL 'https://bologen.ru/award?keyword=what+size+plastic+bag+for+carry+on+liquids' is a primary indicator of this activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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 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://bologen.ru/award?keyword=what+size+plastic+bag+for+carry+on+liquids PDF link annotation
    • http://meetdouche.xyz/weekly_calendar_template_editable1diop.pdfIn PDF document text
    • https://rusaxexuratibu.weebly.com/uploads/1/3/2/6/132680860/lavirisizogewixoxav.pdfIn PDF document text
    • https://gujowidupisume.weebly.com/uploads/1/3/4/1/134131448/joduko.pdfIn PDF document text
    • http://rugegav.mywebcommunity.org/twilight_saga_eclipse_full_movie_download_in_hindi_hd_720p.pdfIn PDF document text
    • http://criticcxck.space/which_of_the_following_is_an_example_of_lateral_thinkinghbw69.pdfIn PDF document text
    • http://bewewafip.scienceontheweb.net/can_medics_go_to_ranger_school.pdfIn PDF document text
    • https://geregilewupune.weebly.com/uploads/1/3/4/8/134849809/9ed2886ad.pdfIn PDF document text
    • http://wijetaz.mypressonline.com/54249328721.pdfIn PDF document text
    • http://static-start.top/where_is_the_battery_on_the_roombazkr9p.pdfIn PDF document text
    • http://vubitim.sportsontheweb.net/87012922827.pdfIn PDF document text
    • http://vijexibat.mywebcommunity.org/44258924584.pdfIn PDF document text
    • https://wutowenejeboz.weebly.com/uploads/1/3/4/5/134599911/8535456865d66ac.pdfIn PDF document text
    • http://gejesixave.scienceontheweb.net/lange_psychiatry_10th.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fasudikek/informant_5_user_manual.pdfIn PDF document text
    • http://nizizebubo.epizy.com/employment_recommendation_letter_sample.pdfIn PDF document text
    • http://tewamenuve.rf.gd/bosch_security_alarm_panel_manual.pdfIn PDF document text
    • http://lojabupabavize.onlinewebshop.net/1277475477.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/62914496837.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/blitzball_exp_guide.pdfIn PDF document text
    • http://junedujivoxoz.epizy.com/bizakupijopax.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/revista_hinode_ciclo_2_2019.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D5 5728 bytes
SHA-256: 2f87355bbd261ca58b930b966fee9d0d8a89ce49f2792e3106a2478d2f064a48
font_01_sfnt_off00010457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10457 10960 bytes
SHA-256: fbac34a8c079a739f129fd5bdf2d01e289ded24415be88dd850806d5bfb8ba87
font_02_sfnt_off000129d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129D7 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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