Malicious PDF — malware analysis report

Static analysis result for SHA-256 975049a2b877bbdf…

MALICIOUS

PDF

116.0 KB Created: 2021-04-15 23:55:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: edc539bc56eebfacf07da227305aa937 SHA-1: eabd2e9836070c503028e737b23cf30400d6f50d SHA-256: 975049a2b877bbdfccddff1386d1ede312d346fe5a86f1293d325a92a3b5ba9e
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with one prominent URL pointing to a domain associated with phishing and malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to a compromised site for further exploitation or credential harvesting. The document body, though heavily obfuscated, contains text related to product searches, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9958

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://maypoin.ru/strik?utm_term=snap+on+torque+wrench+part+number PDF link annotation
    • http://hook-up.fun/436089240475aptk.pdfIn PDF document text
    • https://nulodikoz.weebly.com/uploads/1/3/2/7/132740439/11b93200a26f8.pdfIn PDF document text
    • https://cdn.sqhk.co/fuxiwimemo/ngc7jeY/xobizorupigodinufisuv.pdfIn PDF document text
    • https://vikerurinarifu.weebly.com/uploads/1/3/0/7/130776567/9450076.pdfIn PDF document text
    • https://cdn.sqhk.co/nemazuwigumo/hBghX5g/month_calendar_2019_calculator.pdfIn PDF document text
    • https://vojizozovogimum.weebly.com/uploads/1/3/0/7/130740342/9067a.pdfIn PDF document text
    • https://nirotobilimob.weebly.com/uploads/1/3/4/4/134484477/kuwegesakale.pdfIn PDF document text
    • https://cdn.sqhk.co/sijoputolu/ShhM6O6/36940042455.pdfIn PDF document text
    • http://gukolifuk.iblogger.org/metro_exodus_xbox_one_x_size.pdfIn PDF document text
    • https://miremawa.weebly.com/uploads/1/3/4/6/134631892/kabomikusi-xifekisipi-zigazetupalulag.pdfIn PDF document text
    • http://copyrightshelpcenter.com/loxezuxhz97o.pdfIn PDF document text
    • https://cdn.sqhk.co/tavikalamo/vhgjafc/76283876378.pdfIn PDF document text
    • https://cdn.sqhk.co/lopumilekana/2ihhhig/65131711141.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/is_percy_found_in_the_son_of_neptune.pdfIn PDF document text
    • http://nusazonawo.epizy.com/janigebekival.pdfIn PDF document text
    • http://kunaraxanoxun.epizy.com/khmer_math_book_grade_11.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/dakunejadekokaxeti.pdfIn PDF document text
    • http://lorenivi.rf.gd/brawl_stars_ios__android.pdfIn PDF document text
    • http://jofawapedoguw.rf.gd/attagasam_video_songs_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/module_11_test_answers.pdfIn PDF document text
    • http://nosunep.epizy.com/79360839628.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/febreze_bissell_cleanview_replacement_vacuum_filter.pdfIn PDF document text
    • http://balefowepinu.epizy.com/dalorizawalupupavojeparat.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/refepaxofidikedokix.pdfIn PDF document text
    • http://lowimupedi.epizy.com/90779239176.pdfIn PDF document text
    • http://tejojode.rf.gd/lose_weight_in_30_days_app_android.pdfIn PDF document text
    • http://meloxosiza.epizy.com/acetilcolina_como_neurotransmisor.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_off00017a9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17A9E 3264 bytes
SHA-256: 761a38b419b675dc6c02ac5762b7e48c2589b1c0aca879a05ef338862fb9b48e
font_01_sfnt_off00018628.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18628 5424 bytes
SHA-256: ef200d8349225e38693f2cf029f4282f0473d2920eecb6589b81653cbd1e0f9f
font_02_sfnt_off00019887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19887 12124 bytes
SHA-256: 9843ca4d1adcf62d1e655ab42f2603d753549f1d9d4fce6aaf6bce154c12c59c