Malicious PDF — malware analysis report

Static analysis result for SHA-256 844c6870bb6ca39e…

MALICIOUS

PDF

80.6 KB Created: 2021-03-11 02:00:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 7930df5db2c91d0c4204ecf8c14f0937 SHA-1: 26dde33c0ff1bee1df3a335242ad5e9bf626c805 SHA-256: 844c6870bb6ca39ec62ee7bc2b738ff121e2ca17c2f079d7742f0c8329d73ffa
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://xajibur.ru/award?keyword=list+of+holidays+in+the+philippines+2020+pdf PDF link annotation
    • http://clebohets.xyz/sentry_safe_117036jdh.pdfIn PDF document text
    • http://cabinetshub.xyz/80945832110yotea.pdfIn PDF document text
    • http://50offshop.info/is_schwinn_ic4_same_as_bowflex_c6q7mnc.pdfIn PDF document text
    • http://wuwisometojone.66ghz.com/netflix_pro_mod_apk_for_ios.pdfIn PDF document text
    • http://rmk4sale.xyz/karidabujuniwedi0peot.pdfIn PDF document text
    • http://6gusevshop.space/castlestorm_free_to_siege_apk7gvnl.pdfIn PDF document text
    • http://opt15.ru/fisaratick3ir.pdfIn PDF document text
    • http://hotel-engels.ru/immacule_concepts_de_service_de_netnlomn.pdfIn PDF document text
    • http://openplafond.xyz/65414542211vlaur.pdfIn PDF document text
    • http://newberginvestmentproperty.com/sandisk_clip_sport_plus_16gb_black_reviewwkjl6.pdfIn PDF document text
    • http://cardioactiveitalia.site/neverwinter_testimony_of_the_braverrmni.pdfIn PDF document text
    • http://pushbiz.fun/nesco_pressure_cooker_canning_recipes9k0te.pdfIn PDF document text
    • http://dominis.xyz/beats_studio_price_tagznr4a.pdfIn PDF document text
    • http://vvvvvvvvvvvvvvvvvvvvvb.xyz/violent_media_does_not_cause_violencele6ob.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d427386d-3434-45d9-8802-370857a594f4.filesusr.com/ugd/accd1f_049bf384398f42d280342508d82dc976.pdf?index=trueIn PDF document text
    • http://fanuzisi.epizy.com/88192076867.pdfIn PDF document text
    • http://neloronubu.epizy.com/wobakazufekuruwove.pdfIn PDF document text
    • http://mubadel.epizy.com/rumble_fish_full_movie_online_free.pdfIn PDF document text
    • http://fafuwite.epizy.com/frontline_magazine_free.pdfIn PDF document text
    • https://d52aed46-be45-4f9b-8106-cf6fc7ee66c0.filesusr.com/ugd/b148e5_f66e60c5c27445518d2b1e98bbe43184.pdf?index=trueIn PDF document text
    • https://52a72965-a6d2-471e-b66a-59a59a4d663b.filesusr.com/ugd/e643da_52a6afecb8834191bbee1bd7693645b7.pdf?index=trueIn PDF document text
    • https://58552d80-c20c-4e4f-99b9-91bedbcc07a3.filesusr.com/ugd/c18496_b18203659d8e4422935ed66625695822.pdf?index=trueIn PDF document text
    • https://27420876-d215-4860-9a72-f48db0d0c320.filesusr.com/ugd/4062c2_90edf992366742f9aab3b2a08441eed6.pdf?index=trueIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE4A 5352 bytes
SHA-256: 65938d6c6637caeb9db017002de8de6784673d4006648686ff5ccb2fc34d1ed9
font_01_sfnt_off0001108a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1108A 10672 bytes
SHA-256: cdc358557e5a7f301af7eca899a77d8434c6c079cf01cd8ad70205b5e5932cb3

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