Malicious PDF — malware analysis report

Static analysis result for SHA-256 518f183d8c9be3e3…

MALICIOUS

PDF

68.4 KB Created: 2021-02-14 13:48:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 35fe0de7060fe79e061804cf55d2a8ec SHA-1: 695ddad8663ce06622cc5871df1d995138a94b34 SHA-256: 518f183d8c9be3e3beb49d1982f4ff16c074f55919b12dbb117173b37d1dd545
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://leonvi.ru/wix?keyword=ge+stove+owner%2527s+manual PDF link annotation
    • https://cdn.sqhk.co/zudoputasafe/XnaOf0B/xufulenapevuvalin.pdfIn PDF document text
    • https://gujidasudaximuv.weebly.com/uploads/1/3/4/3/134384457/tibutifebexux.pdfIn PDF document text
    • https://cdn.sqhk.co/toromerepowa/HPW0vgg/marketing_jobs_salary_entry_level.pdfIn PDF document text
    • http://getporte.xyz/burial_rites_free7c3um.pdfIn PDF document text
    • https://kelonefak.weebly.com/uploads/1/3/2/6/132683111/zomozidagexilawoban.pdfIn PDF document text
    • http://samyog.ru/korg_n364_vsturfr5.pdfIn PDF document text
    • https://cdn.sqhk.co/xusawikorut/JgrKjhm/60183900686.pdfIn PDF document text
    • http://lnstagram-copyright-confirms.com/barajuluwo3497r.pdfIn PDF document text
    • https://kurepisafigovu.weebly.com/uploads/1/3/1/3/131398088/4437295.pdfIn PDF document text
    • http://moshon.space/national_academic_recognition_information_centre_naric1qjib.pdfIn PDF document text
    • https://zezevibowavaki.weebly.com/uploads/1/3/4/8/134854125/2046365.pdfIn PDF document text
    • https://cdn.sqhk.co/vorebilifi/uxighgh/42053251547.pdfIn PDF document text
    • https://xufidevudog.weebly.com/uploads/1/3/4/3/134389214/5908802.pdfIn PDF document text
    • https://wewabipela.weebly.com/uploads/1/3/1/3/131379923/tikupef-loxugisufubalol-zopodamininofip-banuviwavutit.pdfIn PDF document text
    • https://geligafut.weebly.com/uploads/1/3/4/0/134012400/f68f5b3f2e0fb75.pdfIn PDF document text
    • https://gebogunuwol.weebly.com/uploads/1/3/4/7/134732963/zefugalupizudape.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/sajezife/kaduwutodunogib.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/37984615690.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/demuzuxemopobeb.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/wiguma.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/indian_couple_dance_forms.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_off0000d060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD060 5048 bytes
SHA-256: ed3944c3d03fc1697d65f6850a3a86c5f34dfc7336961e586b766d1fe1bffed5
font_01_sfnt_off0000e18e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE18E 10148 bytes
SHA-256: da3a17ef00833af4f9dc8577b9d4d33bb2e7c786d96893b3559427470b27049f