Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ee02ef0255dc357…

MALICIOUS

PDF

81.6 KB Created: 2021-03-21 00:27:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 9ecd10a389eff3929260e43839f6296c SHA-1: 810ffe6839c3af162f2c062d31ffd67120649a23 SHA-256: 6ee02ef0255dc35761d608f6c13555ea49259f6f47aca48c8934df7eb8541a28
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting it's part of a link farm or phishing campaign. The embedded URLs point to various PDF files, some of which are flagged as unknown or potentially malicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jottigo.ru/123?utm_term=marketing+executive+job+interview+questions+and+answers PDF link annotation
    • https://cdn.sqhk.co/nonagidux/5YMojfO/five_nights_at_freddy_s_song_10_hours.pdfIn PDF document text
    • https://cdn.sqhk.co/xinulezebi/Zhhr039/40919403093.pdfIn PDF document text
    • https://cdn.sqhk.co/pemenodisoda/X6Xjgr7/brookville_lake_map.pdfIn PDF document text
    • https://cdn.sqhk.co/raserijene/jicgg9B/46301399853.pdfIn PDF document text
    • https://cdn.sqhk.co/bufutoje/gfDihhe/microsoft_movie_maker_for_windows_10_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/volakase/rjhieYn/aaja_nachle_remix_song_pagalworld.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410222/normal_601263c76a4e3.pdfIn PDF document text
    • https://cdn.sqhk.co/gobuwovuv/wpBeVie/68575363768.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393631/normal_60213f0787150.pdfIn PDF document text
    • https://cdn.sqhk.co/nobixapo/yqjjgdW/sprint_drive_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/ruzemesafe/feicrP4/all_the_sims_4_cheats_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/lotidonita/amidQic/parujibalero.pdfIn PDF document text
    • https://cdn.sqhk.co/kuvapipitol/gipggjh/transformers_sentinel_prime_death.pdfIn PDF document text
    • https://cdn.sqhk.co/tefazaturar/jfgdjgN/opera_ballet_history.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6ccf061-af4a-4de8-8a0e-48fea37be8fd/lokixivexaledubi.pdfIn PDF document text
    • https://09ec9d85-9312-4337-94d0-b84080e05f2e.filesusr.com/ugd/ac0094_f6633b0483574c7191660a1f92c0098b.pdf?index=trueIn PDF document text
    • https://1c92f6d8-19eb-429c-9239-1cf6be91372f.filesusr.com/ugd/cc1a03_cbcaab9703e3493f8c7e552fce726f2b.pdf?index=trueIn PDF document text
    • https://e0ff2378-281a-4ea3-95ae-419c526fdc99.filesusr.com/ugd/0baf77_f42facb872314220978f686ad7cc53e1.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1601c242-34e9-465f-a2d3-3fefd4f07e33/garoxeleneninet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99713558-f755-47f2-97c9-9cc1d4686bc8/tippmann_a5_cyclone_feed_assembly.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d15d75c3-5b89-40d5-a4a8-c41466e5ef65/el_nombre_de_la_rosa_serie_capitulo_1_online.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000100ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100EC 5704 bytes
SHA-256: 89d125437a5371a1c21513d9809f5b70ab6dde8c14a5fe5b2b125c8856bb9e59
font_01_sfnt_off0001147d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1147D 10504 bytes
SHA-256: 6eadd5ef95f865c83e457e17cfecbbbb1bf8874daa2211c3f1ab3e972579e5bd

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