Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3d3949e8e80f73f…

MALICIOUS

PDF

74.8 KB Created: 2021-03-19 22:41:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: ba58d86e87018792ce0118de911e6203 SHA-1: 9a6e435ed603a80b92674fa56c6552ef34522a95 SHA-256: f3d3949e8e80f73fb349f40ae1eb8c902cc5319c792301f18ec2af243cc68a78
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://pelibifir.ru/123?utm_term=arsenal+match+report PDF link annotation
    • http://nenugatigubom.66ghz.com/kuvunubisamorux.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416125/normal_5fe15f84168f8.pdfIn PDF document text
    • https://cdn.sqhk.co/tizesefetus/xgeX2gi/82538334698.pdfIn PDF document text
    • https://cdn.sqhk.co/jutafegobexe/SFr2ujf/1006880461.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393639/normal_5fef99c8c2b9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366340/normal_6030ed193ff4b.pdfIn PDF document text
    • http://vikorurapufor.iblogger.org/ampli_peavey_vypyr_15_w.pdfIn PDF document text
    • https://cdn.sqhk.co/vopofuxo/7jajjco/gantt_diagram_template_excel.pdfIn PDF document text
    • https://xexidizufom.weebly.com/uploads/1/3/4/5/134508107/3586875.pdfIn PDF document text
    • https://cdn.sqhk.co/momugutatok/jiwEid9/arijit_singh_songs_list_latest.pdfIn PDF document text
    • https://nodopotol.weebly.com/uploads/1/3/4/0/134018708/xeropuniteraxu-kekov-vozitaj-goturosanot.pdfIn PDF document text
    • https://fapopadiwa.weebly.com/uploads/1/3/1/4/131438416/vapusik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481156/normal_603488a36e1df.pdfIn PDF document text
    • https://widosogepe.weebly.com/uploads/1/3/3/9/133986955/xerino_vapagebalukaguj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467325/normal_6006ba8d53ced.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/CwgdghM/candlestick_patterns_trading_strategy.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/wizuluworafid/chita_chola_punjabi_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a8735b9-0bc7-4cef-a16d-b71693b7b21d/william_shakespeare_sonnet_130_sparknotes.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/21212506095.pdfIn PDF document text
    • http://xivonopegag.epizy.com/wedanaguwig.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/excellent_job_in_spanish.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f77735ee-1d6e-4615-940a-b170b8e52903/98408092551.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77d19a5b-8c2f-4476-ab7c-e5c090df1c10/electrical_engineering_technician_jobs_in_new_zealand.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_off0000e8ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8CE 5164 bytes
SHA-256: 547e7e5a6713f64fa83243e5c28f87acc05ecb85d5477399f75a2778b6dc850a
font_01_sfnt_off0000fa2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA2C 10584 bytes
SHA-256: dfc251de2ceda768b117aae07aeec8ffa4ea1e609650aa15ea7efd1b6e338fb0

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