Malicious PDF — malware analysis report

Static analysis result for SHA-256 b30ab9d30d2685f1…

MALICIOUS

PDF

85.3 KB Created: 2021-03-29 17:56:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: d113b3783b84df71b67c07446f4a60c4 SHA-1: 242d44540c944868cf2c5c97832107b266e91028 SHA-256: b30ab9d30d2685f18c7e25658d0f9a92125e24ddc828343616f53235722f2597
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable domains, suggesting it functions as a link farm or phishing lure. The embedded URL `https://pelibifir.ru/award?keyword=alabama+abortion+law+pdf+free` is particularly suspicious, likely leading to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://pelibifir.ru/award?keyword=alabama+abortion+law+pdf+free PDF link annotation
    • http://feelslike35.com/sony_xplod_speakers_for_cariul7w.pdfIn PDF document text
    • http://ipoteka.net/35529531495h3yrw.pdfIn PDF document text
    • https://xufalawat.weebly.com/uploads/1/3/0/8/130814535/9feadc.pdfIn PDF document text
    • http://harkateine.fun/91991576417btn7s.pdfIn PDF document text
    • https://fipokotosa.weebly.com/uploads/1/3/4/5/134506619/wovuwikovefev.pdfIn PDF document text
    • https://linugotozoluj.weebly.com/uploads/1/3/4/6/134662393/c5c92a2675e1.pdfIn PDF document text
    • http://wuzulosijeg.22web.org/10752294754.pdfIn PDF document text
    • http://nakidki-alkantara.xyz/mod_for_minecraft_education_edition2ezz4.pdfIn PDF document text
    • https://tererenigi.weebly.com/uploads/1/3/1/4/131405956/3923146.pdfIn PDF document text
    • http://item-get.top/wordpress_new_user_registration_email_pluginj2s67.pdfIn PDF document text
    • http://topitoxituzoju.iblogger.org/54907232675.pdfIn PDF document text
    • https://japidofig.weebly.com/uploads/1/3/4/5/134503064/xugediwik_pitanoj_joravumarobivek_wamazurug.pdfIn PDF document text
    • https://vamotavobepud.weebly.com/uploads/1/3/1/4/131438348/7158820.pdfIn PDF document text
    • https://genunilime.weebly.com/uploads/1/3/4/3/134344847/357228.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/05523100-87f1-4646-a43d-d1068f5d3f39/61321875926.pdfIn PDF document text
    • https://1b15a19f-c8c2-4d9d-8c2f-e97aa7ecfe2c.filesusr.com/ugd/eb6c48_e7f0d7d319c0425a800d3f81c17435d1.pdf?index=trueIn PDF document text
    • https://0dc5fd1c-b354-4e5b-9ccd-45395e8994ed.filesusr.com/ugd/f79e8d_cd62790b44364de785eee74cdb573fc0.pdf?index=trueIn PDF document text
    • https://f2d828cf-06d9-46ea-85af-d88b0bc20d44.filesusr.com/ugd/501a20_9023ec48f9ba4e1aa37b807937646b5a.pdf?index=trueIn PDF document text
    • https://31d952d8-eff3-44c4-af09-4b94daea77f2.filesusr.com/ugd/0182ef_1aa9ddd255ef4387bb44fb69edbf5a21.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec9f4e52-a234-4516-9733-475e70d32236/de_que_trata_la_novela_la_iliada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c8a73aa-3d72-44de-9bc3-01eafa705749/50_shades_of_grey_soundtrack_mp3_download.pdfIn PDF document text
    • http://wefixewixe.rf.gd/terjemah_burdah.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78cd2a02-8d72-49ed-9146-4d4b1e866686/will_there_be_a_sequel_to_the_lost_causes_of_bleak_creek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/deccf639-348f-4c7a-8f22-fa19965f110b/english_literature_universities_in_india.pdfIn PDF document text
    • https://2b08c346-38d8-4763-b559-bb9d4fff2313.filesusr.com/ugd/40c9d6_60321f9b53f044c9809f93d2282cf25e.pdf?index=trueIn 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_off000111c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111C2 5228 bytes
SHA-256: c56a452cc22ecd7cb2dd6a82e60db9dcf840acd4a0894905bb914ff0bf37b47f
font_01_sfnt_off00012382.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12382 10456 bytes
SHA-256: 5a67f0bfbdd669d3984bd75f06e5fe8ea61bdc8b4655abb85a1c12e3e4b9cfe0