Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f9359a545cd8d7b…

MALICIOUS

PDF

70.2 KB Created: 2020-12-23 11:38:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0ab1d8338f3a0460d57028bb71517a42 SHA-1: 979eac55fa224c34bd9105e5782b840aeae5e5cb SHA-256: 1f9359a545cd8d7b122d82250f0a387e1870473ec52091c6a4bd04cdd149fd5a
262 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffking.ru/aws?utm_term=dashboard+report+in+jmeter In PDF document text
    • https://lovarewido.weebly.com/uploads/1/3/4/3/134322716/5981944.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458625/normal_5fab26376bdbd.pdfIn PDF document text
    • https://zewadozodatigi.weebly.com/uploads/1/3/4/3/134337643/nipate-vifabirigotades.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385014/normal_5fa58eacb1e88.pdfIn PDF document text
    • https://bileravufal.weebly.com/uploads/1/3/4/7/134749654/xigajovepenumajifaw.pdfIn PDF document text
    • https://pidakulosa.weebly.com/uploads/1/3/4/3/134391257/9e4ff2d43.pdfIn PDF document text
    • https://rigukolanerimi.weebly.com/uploads/1/3/4/5/134519373/4401302.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/wanasuvedigo/chapter_16_capital_expenditure_decisions_solution_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/411f020a-0578-4f09-a011-15f818737b76/jexukivano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3172ca1e-aade-452b-a74c-b7fe667a7f93/truck_driving_game_free_download_for_android.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fe01fb3546cca2c4160e82d/t/5fe0b8a451a86c1b6c5aa2ab/1608562853921/44334385967.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd55bb6394b41d64250a19/t/5fde24311c66f52f5f7f5b94/1608393778117/datapigesizitexi.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/horde_leveling_guide_vanilla_wow.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd2a692dcd53187f1e8c64/t/5fddea12ef735726d24ceabb/1608378899739/kasexakuvelut.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdea684ff074777c984c22e/t/5fdf2c712baf317dc3a2dfec/1608461426612/32745461335.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_off0000d333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD333 5380 bytes
SHA-256: adb9af53a717efef63ee4c720b18cee5e12eb4b3d158b04e1f1450dd47fe5de2
font_01_sfnt_off0000e555.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE555 11300 bytes
SHA-256: a953d701adf5f6ec428450f27d74b7c6567e749cee6f294d7ceda524da4b0521

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