Malicious PDF — malware analysis report

Static analysis result for SHA-256 943b34855e51e164…

MALICIOUS

PDF

76.7 KB Created: 2021-05-21 12:46:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2206dc620af2df5c6c5290e0897463c5 SHA-1: 99dec236b48dbad8037aaa659d368b8988f3a122 SHA-256: 943b34855e51e16400150718cca8ab2558084a0dabe99776d5da03c6fd5b61c2
156 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 0.9991

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 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.
  • 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://kuzutuzo.ru/strik?utm_term=advocare+24+day+challenge+diet+plan PDF link annotation
    • https://pefibiwurabamiz.weebly.com/uploads/1/3/0/8/130874510/loxavolu.pdfIn PDF document text
    • https://sisilodoja.weebly.com/uploads/1/3/1/4/131406442/bedonovimo.pdfIn PDF document text
    • https://tugojomabam.weebly.com/uploads/1/3/4/5/134588125/gurod.pdfIn PDF document text
    • https://rikomurisixub.weebly.com/uploads/1/3/1/4/131454733/detowiguw_welitujo_modikidaso.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383451/normal_5fdfad74c4729.pdfIn PDF document text
    • https://kaxawoxo.weebly.com/uploads/1/3/1/0/131070710/b4e938d0.pdfIn PDF document text
    • https://sijaxidav.weebly.com/uploads/1/3/4/4/134499987/8844466.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473645/normal_5ff1101e37e7f.pdfIn PDF document text
    • https://sudirunerobup.weebly.com/uploads/1/3/4/8/134877260/zotazugugi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369768/normal_5ff2c67ee28bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491451/normal_605557eabe5d2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450151/normal_5fe35871db2f5.pdfIn PDF document text
    • https://tasusigogifu.weebly.com/uploads/1/3/5/3/135303518/5687070.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/zuses/69882434118.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ead0fc0-9d31-4375-ad50-af030928e3d1/sekonic_l-308s_aperture_priority.pdfIn PDF document text
    • https://s3.amazonaws.com/tomamujuf/28210244632.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/nizaguvutexe.pdfIn PDF document text
    • https://s3.amazonaws.com/mosezavor/fishman_aura_spectrum_di_preamp_acoustic_pedal.pdfIn PDF document text
    • https://s3.amazonaws.com/fadobirak/animoto_video_maker_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/26369345538.pdfIn PDF document text
    • https://s3.amazonaws.com/wumodukubaru/distance_time_graph_worksheet_doc.pdfIn PDF document text
    • https://s3.amazonaws.com/lazolu/414896445.pdfIn PDF document text
    • https://s3.amazonaws.com/pojikovewijeja/how_to_find_the_limit_as_x_approaches_infinity_with_e.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/083e7baa-7fcd-4aa7-bd42-2c82c8374347/dyson_v6_animal_cordless_vacuum_manual.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_off0000ea86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA86 5528 bytes
SHA-256: 8326a46ad9647029983fe378354282ac94898d84fcf8cbeadf6617752390d6f2
font_01_sfnt_off0000fd68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD68 10980 bytes
SHA-256: a43824e5150651b3cbf8b72a27560fdf4ea47543c6f3eeeead2a6bbe94041b11

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