Malicious PDF — malware analysis report

Static analysis result for SHA-256 e35368599ad1b5e9…

MALICIOUS

PDF

72.7 KB Created: 2021-02-13 05:52:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 74a8fdf887450828356903691cf29bb6 SHA-1: 9a8d2ed508a2701cb68b494ecf65156fbd43b1a9 SHA-256: e35368599ad1b5e95d6b6b011c490aa754376ef8863d6ecf1c40899609805beb
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wix?keyword=chestplate+enchantments+best PDF link annotation
    • https://nulesurusisozi.weebly.com/uploads/1/3/4/7/134744420/foxuw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408992/normal_5fc7a43d46d94.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408323/normal_5fffa0b969ee3.pdfIn PDF document text
    • https://fewurigog.weebly.com/uploads/1/3/0/9/130969621/cf73e8dde40.pdfIn PDF document text
    • https://tevirilozarenov.weebly.com/uploads/1/3/2/6/132695732/6640768.pdfIn PDF document text
    • https://wukisusu.weebly.com/uploads/1/3/2/6/132696029/7592345.pdfIn PDF document text
    • https://moduruwili.weebly.com/uploads/1/3/2/7/132710657/jopun.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
    • https://s3.amazonaws.com/fusidejebi/arctotheca_calendula_herbiguide.pdfIn PDF document text
    • https://s3.amazonaws.com/pusixa/bahubali_3_full_movie_2019_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/answerhub_vs_stack_overflow.pdfIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/23129975351.pdfIn PDF document text
    • http://memujagitukeza.epizy.com/sap_bods_designer.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_off0000d4b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4B1 4872 bytes
SHA-256: 4a2da6521edc59d40c3b3ed33e027cea961fc0f503c8449aba04254bdb55f8e2
font_01_sfnt_off0000e506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE506 10148 bytes
SHA-256: 594d152cb669d81c7fe9de7dbfba6fff2101df555240896eab258408e48613e6
font_02_sfnt_off000107a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107A7 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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