Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0a0d02a27e6bf4f…

MALICIOUS

PDF

96.4 KB Created: 2021-06-07 15:34:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: c1218462b00df34c00aaeb58b65d353c SHA-1: 3398ca432843f58dd8a6883ad6be613cb002bb9a SHA-256: b0a0d02a27e6bf4fdec26e6d0f6be054ee83c721c301fca3d0d276392387f9a0
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier, specifically flagged as a phishing trojan. It contains a large number of external links, many pointing to disposable hosting services, suggesting a link farm designed to redirect users to malicious sites. The embedded URLs, such as 'https://crewmak.ru/pbw?utm_term=internet+explorer+9+64+bit+windows+10', indicate a lure related to software downloads, likely to facilitate phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • 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.
  • 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://crewmak.ru/pbw?utm_term=internet+explorer+9+64+bit+windows+10 PDF link annotation
    • https://kunokepipadiri.weebly.com/uploads/1/3/3/9/133997431/pagokodufobivoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481424/normal_60419bbeb05af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386839/normal_5fd5f135e48e4.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4386622/normal_60b4b70805368.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380681/normal_6000ab510f721.pdfIn PDF document text
    • https://xopaluwejur.weebly.com/uploads/1/3/1/8/131857284/794450.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497071/normal_604af9a422571.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4506170/normal_602d98a9cf880.pdfIn PDF document text
    • https://jibijuzevigux.weebly.com/uploads/1/3/5/3/135333604/409da2ba60d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378382/normal_60486c8fc4cce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503525/normal_5ff4615241f08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450636/normal_60424330c9a4e.pdfIn PDF document text
    • https://dulifemubal.weebly.com/uploads/1/3/1/3/131398350/peginetowop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497078/normal_60240e4c26ebe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://zezupagijene.pbworks.com/w/file/fetch/144694431/tirilarikaladen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1aca5e6b-f528-4e80-90ff-f0a11902a6a3/mibudixudujo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c254f986-1924-456f-a45b-bc5ff36a4243/chucky_movie_free_watch.pdfIn PDF document text
    • http://dipoziw.pbworks.com/w/file/fetch/144439458/bo2_origins_ice_staff_upgrade_code.pdfIn PDF document text
    • http://wamotarirup.pbworks.com/w/file/fetch/144422865/60025668458.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc8af6fb-4eb2-4ca3-85f0-d7e0738c6b40/44965305511.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD5 8632 bytes
SHA-256: ae2c9c6c234ff4482e3f8addd894e70ddc84626a921356bba004f812d28b74eb
font_01_sfnt_off00010ce9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CE9 5360 bytes
SHA-256: eab0d89693ffa3aad8bab473f553744298e78a3d8f2b3b676617a0298a3bdd8a
font_02_sfnt_off00011f35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F35 12192 bytes
SHA-256: 8226dfb67ae61435b947285030ccfac7205fca89a83523460243707b67ab6a90
font_03_sfnt_off000145ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x145EE 16108 bytes
SHA-256: f2cdb932ee13b796740eb614e233a545327b697588f9e663f06ef4c88113e31b
font_04_sfnt_off00015abd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15ABD 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
font_05_sfnt_off000168bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x168BD 2792 bytes
SHA-256: a6d7b5d04f7cc253e910bc7dbf48565f71a2fa5efd6c63e23c209f98e4469a54

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