Malicious PDF — malware analysis report

Static analysis result for SHA-256 9760e9990c87d052…

MALICIOUS

PDF

72.7 KB Created: 2021-01-23 12:02:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: e670254714f64874d2bf91454b0f3a41 SHA-1: 70e4e1eb407da0dd12ac8a0b860135540f2515ed SHA-256: 9760e9990c87d05297a7061d8852d2b529b32d0d41e0ce66356f97d2ce67ebe6
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV, indicating malicious content. The presence of numerous embedded URLs, many pointing to disposable hosting and employing UTM parameters, strongly suggests a phishing or link-farming attack pattern. While no scripts were explicitly extracted, the PDF structure and embedded links are consistent with techniques used to redirect users to malicious sites, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafftec.ru/123?utm_term=do+artifacts+have+summoning+sickness+mtg PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4465142/normal_5ff6747ed61a3.pdfIn PDF document text
    • https://lefiluke.weebly.com/uploads/1/3/4/8/134887161/kasenakamawuva_rogikeposatabi_pamoro_bidufadejajo.pdfIn PDF document text
    • https://xadixifiv.weebly.com/uploads/1/3/4/8/134888816/965967.pdfIn PDF document text
    • https://lapedifulijep.weebly.com/uploads/1/3/0/7/130739603/ridunelizure_rorajutamavuxi_zokabo_lerulop.pdfIn PDF document text
    • https://wedemewimobuxet.weebly.com/uploads/1/3/4/3/134309086/7ca340f4c9926.pdfIn PDF document text
    • https://naxesitigas.weebly.com/uploads/1/3/0/7/130740165/zizepado_xawiro_gululoma_radazazijinom.pdfIn PDF document text
    • https://gibiboxovozigux.weebly.com/uploads/1/3/4/7/134722082/gopiwam.pdfIn PDF document text
    • https://fubuwadedaxas.weebly.com/uploads/1/3/4/8/134897716/falaruge.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454665/normal_5ff03d58ebf38.pdfIn PDF document text
    • http://detobusukited.iblogger.org/latest_version_of_whatsapp_for_iphone.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403687/normal_6008d3a46d2a6.pdfIn PDF document text
    • http://vogeposekuxav.66ghz.com/bangalore_days_sad_bgm.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/tulosa/modapamebomufireniju.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/alan_watts_audio.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/past_simple_form_of_the_verb_choose.pdfIn PDF document text
    • http://fewajun.epizy.com/pizubik.pdfIn PDF document text
    • http://jasosuwer.epizy.com/25696514071.pdfIn PDF document text
    • http://luvojidepezepag.epizy.com/eddie_bauer_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/javascript_video_from_website.pdfIn PDF document text
    • http://lokemuwebofeg.rf.gd/google_chrome_for_ubuntu_i386.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/8414567092.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_off0000df70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF70 5388 bytes
SHA-256: 36b6f74d0d359bab860feab155a41f2de3ebec92309030faca7db303c7b6e4e3
font_01_sfnt_off0000f1a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1A8 10380 bytes
SHA-256: 17ee81b2d345eff08b71eabdeb740ea6c4fcf68f87d1bf64fd0a860c7d75954c

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