Malicious PDF — malware analysis report

Static analysis result for SHA-256 14fc02120fd6c2a1…

MALICIOUS

PDF

80.9 KB Created: 2021-03-15 21:51:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 411456c6d84ef365655eb900a433ba67 SHA-1: 34e6b4f38063db33de3a895946573da37b317c5d SHA-256: 14fc02120fd6c2a1120f014f3e348dd0ee065c851ae7d21f45acece466bd561b
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics and an ML classifier. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing attempt. The presence of external URIs and the 'link farm' heuristic indicate an attempt to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://lozipotod.ru/aws?utm_term=how+much+does+the+average+navy+seal+make+a+year PDF link annotation
    • https://watibovogop.weebly.com/uploads/1/3/4/8/134876481/natipodarol_nulemetutef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375339/normal_604462e098df0.pdfIn PDF document text
    • http://save50it.pro/6398233860053gif.pdfIn PDF document text
    • http://xugilerasifoveg.22web.org/mefinifivofa.pdfIn PDF document text
    • http://taygerr.com/635797439600db26.pdfIn PDF document text
    • http://baditunabupiru.mywebcommunity.org/dawoodi_bohra_topi_design_book_free_download.pdfIn PDF document text
    • http://numulul.mygamesonline.org/89240241602.pdfIn PDF document text
    • http://drnextact.xyz/dice_tower_diy_wood5m4wr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473049/normal_5ff26bde8a742.pdfIn PDF document text
    • http://vilelares.iblogger.org/banca_internet_banco_provincia_usuario_bloqueado.pdfIn PDF document text
    • http://lerasusakibura.22web.org/fire_emblem_heroes_merge_allies_guide.pdfIn PDF document text
    • http://wivevemeb.scienceontheweb.net/how_to_use_zelle_internationally.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427076/normal_60401bb6ec153.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379054/normal_6046f2b0c0707.pdfIn PDF document text
    • http://virepidutajal.iblogger.org/belegifiviwezafefok.pdfIn PDF document text
    • https://zenanewexakidop.weebly.com/uploads/1/3/5/3/135310893/dadadujivupibiz.pdfIn PDF document text
    • http://salestore.pro/is_data_science_and_engineering_degree6t8s6.pdfIn PDF document text
    • http://kvrovk.xyz/wonder_novel_texti1mxa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://bepelugokuzo.rf.gd/77177550663.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f007.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF007 5464 bytes
SHA-256: 745e530badff3da30782c6986a7ced80ecaefa6ec2309bc87f2a43224cff6ff4
font_01_sfnt_off00010292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10292 10960 bytes
SHA-256: acbb334347362e822d9d15dca1eff63a7d2e7fec4f9ce6e9eb4cbae3aac38eb3
font_02_sfnt_off000127e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127E6 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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