Malicious PDF — malware analysis report

Static analysis result for SHA-256 29ddd0d95efad5b8…

MALICIOUS

PDF

90.3 KB Created: 2021-05-23 14:13:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 5db7de43ec734e2deb896871c017b7d4 SHA-1: 051d3c29ed100a0cfb003862ab921ad8514876c6 SHA-256: 29ddd0d95efad5b8e745ef8f6fefe10686a48d89792795ed161bb365e6d460e3
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a technique commonly used in SEO link farms to manipulate search engine rankings or distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery. No scripts were extracted, but the embedded URLs suggest the primary function is to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://soxebez.ru/strik?utm_term=avon+antique+jewelry PDF link annotation
    • https://garepogive.weebly.com/uploads/1/3/4/8/134871831/bipetebewizogaxulapa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454425/normal_605602de9463e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421476/normal_604762f4d5373.pdfIn PDF document text
    • https://mewerenazedesaf.weebly.com/uploads/1/3/4/8/134885553/vuzitemubaxiwetalus.pdfIn PDF document text
    • https://fasexonepagi.weebly.com/uploads/1/3/0/9/130969542/2567313.pdfIn PDF document text
    • https://wuxorazaw.weebly.com/uploads/1/3/2/7/132712222/delotodirexaler-wipiru-tutuvelitizowem.pdfIn PDF document text
    • https://noserosajegupa.weebly.com/uploads/1/3/1/4/131453720/xolelezisakupet_varekateresi_vekaxobisigi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427828/normal_604620a4d031a.pdfIn PDF document text
    • https://vejupurujiku.weebly.com/uploads/1/3/1/6/131606174/ee0f4.pdfIn PDF document text
    • https://bitojobuf.weebly.com/uploads/1/3/4/8/134892495/2374107.pdfIn PDF document text
    • https://vufixedita.weebly.com/uploads/1/3/4/8/134884828/zirufo_resemimowu_naxegavedu.pdfIn PDF document text
    • https://xubakoveg.weebly.com/uploads/1/3/5/9/135967212/fowesolimu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445881/normal_604d42b713132.pdfIn PDF document text
    • https://gojelubimutur.weebly.com/uploads/1/3/1/3/131384605/3831993.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374360/normal_602703f96f8af.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/jujadodedaruxix/vowaba.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/bobovuzifusawamifumifi.pdfIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/33081668106.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/river_flows_in_you_easy_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/yeh_shen_la_cenicienta_china.pdfIn PDF document text
    • https://s3.amazonaws.com/waduzirader/how_to_install_turbo_c_compiler_in_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/the_wave_2015_full_movie_download_in_hindi_dubbed_480p.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/aspen_hysys_free_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/sivonitibar.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/20056117160.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_off000124c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124C9 4948 bytes
SHA-256: a547cc232048d934899db2ef36bbdaef3541ee820b6b984b28eb17a316878b26
font_01_sfnt_off000135cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135CF 11380 bytes
SHA-256: 62598a654ff6a7f1cc5be518db3e59609ec0a4bb29dec643d570461c5d372e9a

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