Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d89ada2ae628eb1…

MALICIOUS

PDF

87.2 KB Created: 2021-03-25 08:12:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 2991f5bc8166f6ca6dfd7142c927d302 SHA-1: 1169295e5a161de146b21ca89570a8205a3c256c SHA-256: 2d89ada2ae628eb1d6bdbfb20997af4a268400de62b72f61deb053f5a70b8847
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/strik?utm_term=lazarillo+de+tormes+tratado+1+analisis+literario PDF link annotation
    • http://mimamiva.iblogger.org/30089533154.pdfIn PDF document text
    • https://sazavilekin.weebly.com/uploads/1/3/4/8/134851962/xedutejuwuxuwom.pdfIn PDF document text
    • http://wosidigelime.iblogger.org/vigodalazujolibi.pdfIn PDF document text
    • https://gonibulurigudum.weebly.com/uploads/1/3/0/8/130874364/76942.pdfIn PDF document text
    • http://daating19.site/sushi_cat_2_pokip5ni6.pdfIn PDF document text
    • http://sewalenugebob.iblogger.org/37149299055.pdfIn PDF document text
    • http://ita-women.space/79969128209lt800.pdfIn PDF document text
    • https://xonedapu.weebly.com/uploads/1/3/4/6/134654428/6e698b85c.pdfIn PDF document text
    • https://posexabilibo.weebly.com/uploads/1/3/4/3/134350455/vexojikaxukozobaxog.pdfIn PDF document text
    • http://trycabinets.xyz/vabapabaxoo0pof.pdfIn PDF document text
    • https://penegekefifix.weebly.com/uploads/1/3/4/5/134586424/guvofituranubalem.pdfIn PDF document text
    • https://fusufuxono.weebly.com/uploads/1/3/1/6/131606103/gesijes-sotaxarusul-duwat-giborus.pdfIn PDF document text
    • https://zabodoxukuxubar.weebly.com/uploads/1/3/4/9/134904472/zepetelivutabin_vukemo_zulim_tipatafoto.pdfIn PDF document text
    • https://vipogonegope.weebly.com/uploads/1/3/0/9/130969266/38295b6cf9379.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/89f86a5f-999e-4e22-8755-f981c9ff0b21/79026088401.pdfIn PDF document text
    • http://zapopododo.rf.gd/google_play_games_free_ios.pdfIn PDF document text
    • http://vaxufedujij.rf.gd/invicta_watches_for_sale_in_pakistan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6e24836-1988-407d-9a63-0c483ccf8bfe/watch_big_little_lies_season_2_free_uk.pdfIn PDF document text
    • http://nasedelowose.rf.gd/diccionario_espaol_definiciones.pdfIn PDF document text
    • http://dunugamufaj.epizy.com/nezakigalomaluf.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011969.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11969 5016 bytes
SHA-256: 65443be3cb44284d57b227980c89b6f775d47820f56998d571ae0db644b95043
font_01_sfnt_off00012a6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A6B 10720 bytes
SHA-256: 2c5543beed0872f4269a8868520103b78b7a5e42a4f42905fd25af081bd2d8cc

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