Malicious PDF — malware analysis report

Static analysis result for SHA-256 c01f5e5319fc6dec…

MALICIOUS

PDF

90.4 KB Created: 2021-03-27 19:29:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 34bc70d7bb8501c261b8ebc5261560be SHA-1: a6b1281da01d6b9a1c1f5bfe76b2d2ec3d1db910 SHA-256: c01f5e5319fc6decc595fb69e6ec7ac2c845b21fef7c93eb24dc30d638c18475
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for distributing further malware or leading users to phishing sites. Although no scripts were explicitly extracted, the PDF structure and heuristics point towards malicious content designed to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://soxebez.ru/wix?keyword=wow+tbc+nightbane+guide PDF link annotation
    • https://risibazizugati.weebly.com/uploads/1/3/4/7/134710005/a1ebbce12.pdfIn PDF document text
    • http://wedidizelajat.mypressonline.com/beluguvorupefutuwus.pdfIn PDF document text
    • http://gopadaxin.mywebcommunity.org/kevuviketedexelus.pdfIn PDF document text
    • https://foxenezave.weebly.com/uploads/1/3/5/3/135316699/zugepufukem-keruvatum-mololitobitit-bozobax.pdfIn PDF document text
    • http://jorowijedo.mywebcommunity.org/family_portrait_photographers_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/xedufoga/gfB6EeN/blood_money_tattoo_machines.pdfIn PDF document text
    • https://vixugusimuxomuj.weebly.com/uploads/1/3/0/9/130969476/8167323.pdfIn PDF document text
    • http://batemin.iblogger.org/catalogo_hinode_2020_ciclo_2.pdfIn PDF document text
    • https://cdn.sqhk.co/xukigipeduve/cgcEjcT/pazekejevibezofu.pdfIn PDF document text
    • https://cdn.sqhk.co/wepurodapike/dyQqjbw/cheap_homemade_teacher_appreciation_gifts.pdfIn PDF document text
    • https://kexowepapu.weebly.com/uploads/1/3/2/8/132815076/b0c3abb9803d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wiwowefitupek.epizy.com/fallout_4_console_commands_add_weapon.pdfIn PDF document text
    • https://ca6b24e6-01cd-4368-a310-1df05077a315.filesusr.com/ugd/11b39a_8ee197f83cf6433382182255784d50a6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bejexe/8205091950.pdfIn PDF document text
    • http://litiwevapebani.epizy.com/lanthanide_and_actinide.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/nonedoxaseximuzimevo.pdfIn PDF document text
    • http://vonizevugopu.rf.gd/vibagofibigenumox.pdfIn PDF document text
    • https://b5b764bc-4fc6-48d7-9a4b-423a4d05f225.filesusr.com/ugd/3f2390_b22c23365c0743d789e0d791b0723617.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bezorito/70480024263.pdfIn PDF document text
    • https://101c3d73-5e22-4da1-a203-a3a2a794ce88.filesusr.com/ugd/69a512_e633b5219bb14341afeaa1f3d574a002.pdf?index=trueIn PDF document text
    • https://92fa68c6-d088-48c5-94d9-776fe0504fc0.filesusr.com/ugd/5a053b_18b547ccff234751af66877511a492ca.pdf?index=trueIn PDF document text
    • http://japinoxizidunub.myartsonline.com/28238878832.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/fitted_bed_sheet_twin_xl.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/older_chevy_trucks_for_sale_in_texas.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011a6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A6E 5140 bytes
SHA-256: 7beeb68d04ff7c5042b70af1e87c48685005bc19354f4093c6223743870b19ea
font_01_sfnt_off00012bfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BFA 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off00013488.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13488 10952 bytes
SHA-256: 56fb08754e67121ea51ad1607d16b1754ec0710429122f80ed6da5b08795d01b