Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee30276990b9927b…

MALICIOUS

PDF

89.4 KB Created: 2021-05-15 12:39:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 586566e9bb334c43d6cd625844e67bf5 SHA-1: ddcb1154be10d3d9c52775a1c9d1a9bf6ace812a SHA-256: ee30276990b9927bec0d209791581f79297f198f53cea031a4850fb5ff344965
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable hosting and link farms, indicating a redirection mechanism. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM suggests the PDF is designed to host many links on disposable domains, likely to distribute malware or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/strik?utm_term=brown+vs+board+of+education+lower+court+decision PDF link annotation
    • http://zizodoroluxonaf.sportsontheweb.net/83700290254.pdfIn PDF document text
    • https://wotawodakel.weebly.com/uploads/1/3/5/3/135316359/notef.pdfIn PDF document text
    • https://nozezezolakufu.weebly.com/uploads/1/3/2/6/132695232/8936414.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403259/normal_604ded2117828.pdfIn PDF document text
    • https://raxabebawozovi.weebly.com/uploads/1/3/4/3/134311701/ledatagorugugoxezena.pdfIn PDF document text
    • https://zugixipenelir.weebly.com/uploads/1/3/4/5/134591811/9208511.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445731/normal_5fe4fda9e3db2.pdfIn PDF document text
    • http://homebig.space/patching_system_image_unconditionally_xdah8weh.pdfIn PDF document text
    • http://sesizuxewewax.mygamesonline.org/the_black_cat_vocabulary_quiz.pdfIn PDF document text
    • http://lessonsonline.site/bauhaus_heavy_t_font_free6zara.pdfIn PDF document text
    • https://lumovomudin.weebly.com/uploads/1/3/4/7/134704265/mosamutosuvebos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gezixus.myartsonline.com/wotis.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/52889441182.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/zakojiwitopovewirifurop.pdfIn PDF document text
    • http://gixisenusadat.rf.gd/38531793515.pdfIn PDF document text
    • http://dikumetuvo.epizy.com/alpine_cde-133bt_not_pairing_with_iphone.pdfIn PDF document text
    • http://kakogajoxe.epizy.com/balraj_singh_song.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_off00012019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12019 5356 bytes
SHA-256: 59b24bd4f68ecae6dd2153525b982b6f92174b6e79b8be26a1e4e64d0f7373e6
font_01_sfnt_off00013278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13278 10496 bytes
SHA-256: 2ec022e5b471a6f7fc4dd744b5937cae47ee240db2f80ef5d2b966ff3bee5c53

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