Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dc501bd650da8be…

MALICIOUS

PDF

80.5 KB Created: 2021-02-20 23:42:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 607d67f291ad595da8fdad93feccc4ed SHA-1: 9c7810dab7af3c7959684757a8289cd0ffc33a79 SHA-256: 8dc501bd650da8be1c219a98539ae2b315d1d4aa45289f36a3dcbe25ee03015d
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs and is flagged as a link farm on disposable hosting, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to phishing sites or download further malware. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to exploit users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://seumenha.ru/wix?keyword=mia+little+fires+everywhere+book PDF link annotation
    • https://figokafudifugi.weebly.com/uploads/1/3/1/3/131383964/b4f66ad5.pdfIn PDF document text
    • http://gadolokelijibus.iblogger.org/balancing_worksheet_1_simple_sight_balancing_answer_key.pdfIn PDF document text
    • http://rakuxijewimafud.22web.org/date_and_time_weather_report.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380403/normal_5fffd9321f49b.pdfIn PDF document text
    • http://rutonujak.iblogger.org/citra_emulator_android_specs.pdfIn PDF document text
    • https://xoxopurotawasuj.weebly.com/uploads/1/3/4/6/134651309/tikesizokoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454043/normal_5fd67c0621f54.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409123/normal_5fce48dbabadc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392442/normal_5ff950604a5a1.pdfIn PDF document text
    • https://xupusunozad.weebly.com/uploads/1/3/1/0/131070799/1178288.pdfIn PDF document text
    • https://zodukaveg.weebly.com/uploads/1/3/5/3/135345947/mular_wigigasobafur.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450427/normal_600270a613794.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://medetoti.epizy.com/verbals_review_worksheet_answers.pdfIn PDF document text
    • http://mogopubu.epizy.com/boom_beach_update_2019_apk.pdfIn PDF document text
    • http://poravilotizeve.epizy.com/lost_in_japan_violin_sheet_music.pdfIn PDF document text
    • http://fanunif.rf.gd/bokalex.pdfIn PDF document text
    • http://jejemizon.rf.gd/guzodizipubamorawarelifo.pdfIn PDF document text
    • https://s3.amazonaws.com/jidagafinuxesu/tipebarodoporavabok.pdfIn PDF document text
    • http://varosuvavim.epizy.com/31033225354.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/72747108311.pdfIn PDF document text
    • http://maxafatuvapare.rf.gd/smokey_and_the_bandit_2_soundtrack.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://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5BC 5316 bytes
SHA-256: 0b478098351281277a4f6ca205315c0ce0637551867ed2c43187fe6a6abcf372
font_01_sfnt_off0000f7ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7EC 2140 bytes
SHA-256: fa98316bad0ee393e4244be63b1d230beb4724cf855be96ad4f2c87a5b302ae2
font_02_sfnt_off000101bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101BB 6068 bytes
SHA-256: 7a02da73c5ff24218d04b188db7d31ceb9303d5dedd43b645f18a615a19d9b6a
font_03_sfnt_off0001116c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1116C 10084 bytes
SHA-256: c9c3726b4dab4c39c61acd35afe7997c69d82ebf38e4dfa00e4ed1b8f66dc398

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