Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf076745b32abbba…

MALICIOUS

PDF

83.6 KB Created: 2021-03-22 07:10:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 5d64074286511916cb7503b5348ac77d SHA-1: bb6506336ba8ac5d422d5521ca32cce1d24eaaf2 SHA-256: bf076745b32abbba21e30e91d12a8d1af4e5d2e7387d95db24733aab31718b58
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing or malware distribution attempt, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/wix?keyword=rogue+class+mount+guide PDF link annotation
    • http://copyrightsupporteds.com/78679937964p2rnd.pdfIn PDF document text
    • https://dirovobu.weebly.com/uploads/1/3/5/3/135319654/mibavam.pdfIn PDF document text
    • http://hurricane1.space/dilowuguzorukorulibifameutk7a.pdfIn PDF document text
    • http://wssummer.space/cut_you_off_song_lyricstr94f.pdfIn PDF document text
    • https://jaxoruxevag.weebly.com/uploads/1/3/1/6/131606876/lamar.pdfIn PDF document text
    • https://degitetebumike.weebly.com/uploads/1/3/1/8/131857056/vazerarofef.pdfIn PDF document text
    • https://cdn.sqhk.co/kedetofido/6Yggrb2/wedding_salon_game_free_download_for_mobile.pdfIn PDF document text
    • https://cdn.sqhk.co/zolulesar/hd3cAif/52717248328.pdfIn PDF document text
    • http://wovuwukotuvoxi.mygamesonline.org/23890143710.pdfIn PDF document text
    • https://bupuvebawa.weebly.com/uploads/1/3/2/7/132740405/6364455.pdfIn PDF document text
    • http://dirozigumifew.scienceontheweb.net/91861158682.pdfIn PDF document text
    • https://cdn.sqhk.co/puberufibo/geiigiw/nubedaraz.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/meihcjg/snapchat_logo_pastel_pink.pdfIn PDF document text
    • http://vnatural.space/what_has_sugar_but_no_carbsmhddk.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/naxozelozude/14317087941.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7ffbf21-20fe-425b-9563-af59187455d1/treasure_island_book_setting.pdfIn PDF document text
    • https://s3.amazonaws.com/pubopelej/degimojelosabewebas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cfd450e-1abd-4efe-b91e-66b472c53349/can_sinkholes_happen_in_the_ocean.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db29ddcd-6a5e-4bba-9efc-56bb10a3c8ac/74510431584.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/wineberadinizaredeju.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_off000109fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109FE 5168 bytes
SHA-256: 12d84be14b57a9207e895fb5466b87de8f23c8e1f6a6d2bcf36c9aeb6712ce9c
font_01_sfnt_off00011b90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B90 10952 bytes
SHA-256: 61c38716fd7fa929160fdcc2abc75d776b91af94fd0fa260d35267b9d761daa3

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