Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b515ac92d7eb63c…

MALICIOUS

PDF

98.3 KB Created: 2021-02-07 05:49:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 7c0a75ae02dbfcd081b59e79177854f3 SHA-1: bf470ef86071bd3d1d44185fe9b49725dee33925 SHA-256: 4b515ac92d7eb63c4324cd25cde69ee6739fc37d45837e0828fb57c2ec460e49
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically identified as an external URI pointing to 'baarspo.ru'. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the PDF is designed as a link farm on disposable hosting, suggesting a malicious intent to redirect users. ClamAV detection and ML classification further confirm its malicious nature, likely as a phishing or malware distribution lure.

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 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://baarspo.ru/wb?keyword=il%20cammino%20di%20santiago%20film PDF link annotation
    • http://balifruit.com/tn_11th_chemistry_book4su2m.pdfIn PDF document text
    • http://lngcliente.com/suwanidotomi4qryb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490724/normal_5fec27b2e2c39.pdfIn PDF document text
    • http://supermagazforsale1.xyz/pafopejamoxbg07z.pdfIn PDF document text
    • http://generalmassage.online/14326930781fcx5c.pdfIn PDF document text
    • http://bigchance.pw/40970332999ig328.pdfIn PDF document text
    • http://sdfsdfsdf.shaketorch.com/63303879024.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423453/normal_5fe7311d9d361.pdfIn PDF document text
    • https://pazudafodimaje.weebly.com/uploads/1/3/0/7/130776249/5a3985.pdfIn PDF document text
    • https://wolunogejafijut.weebly.com/uploads/1/3/4/6/134649672/lekug.pdfIn PDF document text
    • https://jesidovelagira.weebly.com/uploads/1/3/4/7/134705211/e6c606afd52.pdfIn PDF document text
    • http://nashremont.site/vofirodipibuwimoxejclxy.pdfIn PDF document text
    • http://dujekuba.22web.org/chaudhary_toolkit_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.orgThisIn PDF document text
    • http://riwexakax.epizy.com/punjabi_movies_hashar_babbu_maan.pdfIn PDF document text
    • http://duxurulokij.epizy.com/vowepij.pdfIn PDF document text
    • http://funolowudako.epizy.com/singh_is_king_movie_song_320kbps.pdfIn PDF document text
    • http://zekovulelopur.epizy.com/anti_ragging_form_in_english.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://scripts.sil.org/In PDF document text
    • http://scripts.sil.org/OFLAbyssinicaIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011846.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11846 5184 bytes
SHA-256: 84830fadccce48e1f493578d88809693d24bc910ad482553932ec91dd0cc90e1
font_01_sfnt_off000129db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129DB 20932 bytes
SHA-256: ead810a10164ba0c8c2cb5d99c5e0c99d7341e42717b2dfdf36bf3a592302fc0
font_02_sfnt_off000149de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x149DE 3720 bytes
SHA-256: d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281
font_03_sfnt_off00015542.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15542 11724 bytes
SHA-256: 054a20dbfdaa17efdaabd3818b738da13d63c35eafe779ba0f34cb8c4585682c

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