Malicious PDF — malware analysis report

Static analysis result for SHA-256 58877c7326d5982e…

MALICIOUS

PDF

64.3 KB Created: 2021-02-14 20:03:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7ca84ac3ee8cee51061b7f2e01640f59 SHA-1: eea2a7f089ac5552b607f986167d53a924070b6b SHA-256: 58877c7326d5982e9cfd26e35fc525a6fd0615ad9b5d47f9afed85e204b39340
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wix?keyword=uil+ld+debate+topic+spring+2020 PDF link annotation
    • https://pezibife.weebly.com/uploads/1/3/4/3/134376528/febofijewogaxadugev.pdfIn PDF document text
    • http://trikotoria.ru/sedasaxalatodejumoniliroda6gin.pdfIn PDF document text
    • https://dinijituwit.weebly.com/uploads/1/3/1/6/131606252/a964b47.pdfIn PDF document text
    • https://zokibiruxe.weebly.com/uploads/1/3/5/3/135326092/d7c78.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424662/normal_5ff69d431d130.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470552/normal_60141761b9b40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482405/normal_6015bf959dea9.pdfIn PDF document text
    • https://mofibowego.weebly.com/uploads/1/3/1/4/131406437/693db.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://risasuwoz.epizy.com/bakikepidu.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/bosch_washer_dryer_manual_series_6.pdfIn PDF document text
    • http://talidarufuji.epizy.com/hibiscus_flower_information_in_kannada.pdfIn PDF document text
    • https://s3.amazonaws.com/zatasipezeg/52752093220.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/purble_place_cake_shop_game.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/survey_answers_strongly_agree.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_off0000bf90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF90 5644 bytes
SHA-256: 5ffe16eb6142a530d8cba4a953e285d3cf3dbfdf643cb026bc02b5080052da5c
font_01_sfnt_off0000d2ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2CE 9864 bytes
SHA-256: ae7c1f8fe313541768166e743100512077e3b53be33e83200ca8852f9a4962ab