Malicious PDF — malware analysis report

Static analysis result for SHA-256 bec6a4aeef6166a7…

MALICIOUS

PDF

77.4 KB Created: 2021-04-08 03:08:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 44634e7fd4c3ceddacefa0e8cde75cd3 SHA-1: 85dbe9889a5869c3aff251139d545ba120c6b940 SHA-256: bec6a4aeef6166a73a3661390412e2ea0364afc2fb4934860e87c57a04c13fea
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9997

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://leonvi.ru/wix?keyword=come+be+my+light+pdf+free PDF link annotation
    • https://cdn.sqhk.co/zugeketinog/qhfiejd/marvel_stadium_restricted_view_seating.pdfIn PDF document text
    • https://cdn.sqhk.co/ganuniwiku/ethjgiY/griswold_christmas_lights_meme.pdfIn PDF document text
    • https://bapumora.weebly.com/uploads/1/3/2/7/132740837/2769459.pdfIn PDF document text
    • https://cdn.sqhk.co/vopupevomate/ibPjigj/survivalcraft_apk_gratis_para_android.pdfIn PDF document text
    • https://cdn.sqhk.co/figegixo/bLjjd9s/caption_for_childhood_pics_on_instagram.pdfIn PDF document text
    • https://ripapexogona.weebly.com/uploads/1/3/0/8/130874469/sagagoweniziw_tijanufi_puvatikawis_jezedakadaxaju.pdfIn PDF document text
    • https://xitupiwe.weebly.com/uploads/1/3/4/4/134489196/1cf8d7ec3d3a94.pdfIn PDF document text
    • https://cdn.sqhk.co/vagekoxes/hg9jcFl/college_football_playoffs_2020_rankings.pdfIn PDF document text
    • https://cdn.sqhk.co/vefemenivu/pw5Ojdq/60542063669.pdfIn PDF document text
    • https://cdn.sqhk.co/tosuwukiwate/jdkmuic/16529720491.pdfIn PDF document text
    • https://xutorobufazam.weebly.com/uploads/1/3/5/3/135345650/3668c3667.pdfIn PDF document text
    • https://cdn.sqhk.co/zanotunuzi/m7LjiUs/2514250839.pdfIn PDF document text
    • https://cdn.sqhk.co/kixituvelil/hfjcjjg/bolavebem.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/c18a6a51-a5f3-43d3-9b7d-551e74d1f363/how_many_pages_in_harry_potter_and_the_half_blood_prince.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/41287159217.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/bamboo_lyocell_sheet_set.pdfIn PDF document text
    • https://4779f2f8-a33e-4327-9c78-21ee0bcf4620.filesusr.com/ugd/31bf02_f2002970314649d6b12177e406a8d992.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/how_to_unlock_disabled_iphone_5_without_computer_or_itunes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1902b9c1-19d2-46ff-9ca1-40ea042a5459/92363796747.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/30326582843.pdfIn PDF document text
    • https://855e1e5b-0daf-4dce-aa73-dfad2bfec5df.filesusr.com/ugd/ced2dc_7cd16d9170184752a823e8377ad5733b.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_off0000eeab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEAB 5212 bytes
SHA-256: 4cc61cbda34521ee19a3cd6ee37742d12ce43a3c18931289151154c8a1ca9586
font_01_sfnt_off00010041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10041 12108 bytes
SHA-256: 4c1ecb3df7ce6dc2fa08ad1c04dccc7cae15ed671007a896294ef0dbc872e217

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