Malicious PDF — malware analysis report

Static analysis result for SHA-256 6801426ea1bff4d0…

MALICIOUS

PDF

95.9 KB Created: 2021-03-20 17:25:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 00c3c5b7dacdc1943c4a3cddc8a2c5b4 SHA-1: b59195f5a7bb98c70c02e754225f4c9373fd5303 SHA-256: 6801426ea1bff4d0a8a008ee26b4bf368e6b21bd86c2c70047ed5c8ba596b86c
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically as a phishing or link farm document. It contains a large number of external links, many hosted on disposable domains, suggesting an attempt to direct users to malicious or spam content. While no scripts were explicitly extracted, the presence of external links and the nature of the heuristics indicate a likely attempt to leverage web content for malicious purposes, potentially as a phishing lure or to distribute further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://zajinet.ru/wix?keyword=swtor+merc+innovative+ordnance+5.0 PDF link annotation
    • http://stopro.store/can_i_use_iphone_as_samsung_tv_remotenx403.pdfIn PDF document text
    • https://cdn.sqhk.co/luzigagoguna/fnFcShi/film_theme_song_quiz_questions.pdfIn PDF document text
    • https://cdn.sqhk.co/lupobikud/iijErNH/machine_gun_preacher_full_movie_online.pdfIn PDF document text
    • http://akmurzina.com/2106064521238o39.pdfIn PDF document text
    • http://maska-respirator.shop/pexomepezidobog9wh8o.pdfIn PDF document text
    • http://inscarusa.info/mirivawawegokalafoluwewyxblw.pdfIn PDF document text
    • https://cdn.sqhk.co/dasisogi/CiesScD/granny_chapter_two_gameplay_walkthrough.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406213/normal_60513d9912470.pdfIn PDF document text
    • https://nanupubixo.weebly.com/uploads/1/3/0/9/130969545/wilusufovavose-libakojemi.pdfIn PDF document text
    • https://cdn.sqhk.co/bupedamarib/jaifjfU/puwejofesirazimewibefekud.pdfIn PDF document text
    • https://fikomepa.weebly.com/uploads/1/3/5/2/135299400/latoz.pdfIn PDF document text
    • https://cdn.sqhk.co/lokuwanij/2Y3HUAM/talking_cat_and_dog_apk_revdl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497110/normal_6050476924d84.pdfIn PDF document text
    • https://cdn.sqhk.co/dabebasavus/R5RKgjT/cs_timer_setup.pdfIn PDF document text
    • https://datipozor.weebly.com/uploads/1/3/0/8/130813945/4037663.pdfIn PDF document text
    • https://wixoxane.weebly.com/uploads/1/3/4/7/134734379/841b7127.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388424/normal_5fde8ddd6c683.pdfIn PDF document text
    • https://tixovokibena.weebly.com/uploads/1/3/4/1/134109053/rajirirexe_xovofa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/potofaw/amazon_sales_reporting_software.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/55238616749.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/64859609374.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_off00013912.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13912 5428 bytes
SHA-256: d62d6f747df8810b6907e84c11f596c4c444926d1d6dc8159f3d59a5662dcc84
font_01_sfnt_off00014b93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B93 11244 bytes
SHA-256: 7de4e86a8c428a52e99e7821c77ee7b26c6003fa27193e2ab98f0c2484b7dd93

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