Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6d35ed63551075e…

MALICIOUS

PDF

85.2 KB Created: 2021-05-11 17:47:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 177a321db64093ef6af9b4595ac1164c SHA-1: 70f1979d2341be486787f4ead95f87c6273f2191 SHA-256: e6d35ed63551075ec571d6603643e6b25a006b64d73c947b43d0716081299731
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 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://nipisod.ru/strik?utm_term=is+priyanka+chopra+jonas+related+to+deepak+chopra PDF link annotation
    • http://mavafesumej.medianewsonline.com/brochure_design_template.pdfIn PDF document text
    • http://wipunemobak.mygamesonline.org/animorphs_invasion.pdfIn PDF document text
    • http://netewe9.xyz/kikatafadesurifisajud8xpb.pdfIn PDF document text
    • http://verification-help.com/69012180351afnvt.pdfIn PDF document text
    • http://azorocheat5.xyz/58244330599t5zfp.pdfIn PDF document text
    • http://gotexewadegu.iblogger.org/pazezexogora.pdfIn PDF document text
    • http://sonuwazuregup.22web.org/jerepavetita.pdfIn PDF document text
    • http://lefibipefazefep.mypressonline.com/beginners_guide_to_python_book.pdfIn PDF document text
    • http://1xbet-regi.site/how_to_take_apart_a_kreepy_kraulymsx8m.pdfIn PDF document text
    • http://valuburikodajad.medianewsonline.com/english_short_stories_for_advanced_learners.pdfIn PDF document text
    • http://metoxegid.mygamesonline.org/56010006421.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jadizugexagosor.rf.gd/16033087155.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18fb80bc-f5ee-4579-b08e-dec229e1684c/n6_surface_finish_chart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f85b83f7-b1c8-4286-84c1-bba62ac28f79/notidovoxikapud.pdfIn PDF document text
    • https://dda5c79a-a75d-44d9-a006-48dec3bfe172.filesusr.com/ugd/115d6e_272f11a9afd14b07a57dc16edb545972.pdf?index=trueIn PDF document text
    • https://45f91bdd-2b68-4e60-ae2c-b14373ae5332.filesusr.com/ugd/0d089b_7e0c67a989394276aa64376550ee086e.pdf?index=trueIn PDF document text
    • https://d1ced4a1-fa29-4c66-b583-77209f32159a.filesusr.com/ugd/c88d8b_09bcf04912954771b875020053cef719.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/76079217-69da-4dfd-a3a8-e2453b98f8fc/how_to_do_spy_training_at_home.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9213021f-b2a1-4de4-96c3-9e951a47fad0/gokozopipe.pdfIn PDF document text
    • https://a8fdb364-3865-4521-a36b-e12f4de7752f.filesusr.com/ugd/e20637_b0dd03b3e0ce444fa3ad4ac4240d541a.pdf?index=trueIn PDF document text
    • https://80d0ab3e-5d82-4547-8f02-ffe19150e389.filesusr.com/ugd/776b9b_91271f676d0f492c94c3ffc93eb47b04.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
    • 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_off0000f27d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF27D 5340 bytes
SHA-256: 9e185e2e4f854bee4ee004bfa24e914aa46cbce876cf1d9391f7cbe46ba5ea5d
font_01_sfnt_off000104af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104AF 11376 bytes
SHA-256: fa87ca0f3df661005cb307c1162066623160c35a2601bc0efb2ec426c576e074
font_02_sfnt_off00012b9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B9B 18744 bytes
SHA-256: debe1c9edd055688bc30a5777896002fece6a9aa7ffb261e2768153f83da7563