Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c2e8bdf38e7dc66…

MALICIOUS

PDF

76.0 KB Created: 2021-03-03 07:59:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 23489db2418a3b5e76b00fbb83245b77 SHA-1: f65c1c8ebad2ae6505e3db287fd67d62349c5ed4 SHA-256: 0c2e8bdf38e7dc666a88b7e6fdb9a77ae4ff3bc872db0281c50ea454d95368c3
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gimoguvi.ru/wb?keyword=why%20did%20japan%20attack%20manchuria%20and%20china PDF link annotation
    • https://pebabole.weebly.com/uploads/1/3/4/6/134698512/fedobusetunazokime.pdfIn PDF document text
    • https://zedunuburow.weebly.com/uploads/1/3/4/0/134042823/71a7207c7.pdfIn PDF document text
    • https://ralutadepijug.weebly.com/uploads/1/3/5/3/135305627/6a01425.pdfIn PDF document text
    • https://movadopudi.weebly.com/uploads/1/3/0/9/130969115/253ba9267c.pdfIn PDF document text
    • https://lefagetali.weebly.com/uploads/1/3/2/3/132302894/7250549.pdfIn PDF document text
    • http://ruzopiter.iblogger.org/dixejoguxewotibejub.pdfIn PDF document text
    • http://vijufik.iblogger.org/wexatagafob.pdfIn PDF document text
    • http://lifopemavuju.22web.org/first_excited_state_of_hydrogen_molecule.pdfIn PDF document text
    • https://panebafizi.weebly.com/uploads/1/3/4/3/134365464/kigapamigo.pdfIn PDF document text
    • https://pasironukid.weebly.com/uploads/1/3/0/8/130814081/kedonapipadetu-xopano-vanipen.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/vazisi/52608903264.pdfIn PDF document text
    • https://s3.amazonaws.com/jidagafinuxesu/93120940335.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/cerebriform_nevus_icd_10.pdfIn PDF document text
    • http://zobuwijezad.onlinewebshop.net/polk_audio_soundbar_with_alexa.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/14188125658.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_off0000ec24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC24 5360 bytes
SHA-256: 8cecf4682ba2521c5b6864676a26e58a9731aa13603a58b53215d7c1cbc91edb
font_01_sfnt_off0000fe4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE4D 10836 bytes
SHA-256: d282b378f715a8bd045e23fdb5862177ccc02915c3d025f192de4791ce29093a