Malicious PDF — malware analysis report

Static analysis result for SHA-256 432bc0c9ea046323…

MALICIOUS

PDF

52.6 KB Created: 2020-10-15 04:48:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 5f69bd12ee67a54d75b31e64c07e012a SHA-1: e8417ad89bf22aa924bc4a325a3f1c612ae05a11 SHA-256: 432bc0c9ea0463232e591bbf402d9f42aa0092de6a40dc405883adb1e2802e88
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://gettraff.ru/123?keyword=military+flashlight+apk+no+ads In PDF document text
    • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/7b8a6b7cb9.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/038885c85ecf8f0.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/wozumadaku-mukevewurovebu-nefebo.pdfIn PDF document text
    • https://site-1043095.mozfiles.com/files/1043095/60634728623.pdfIn PDF document text
    • https://site-1042783.mozfiles.com/files/1042783/65878707747.pdfIn PDF document text
    • https://dejuxowiku.weebly.com/uploads/1/3/0/7/130738850/bafebo-lujato-dozoxigufi-fofaxudobisexox.pdfIn PDF document text
    • https://jaserasozupog.weebly.com/uploads/1/3/1/4/131454215/gefudigoramoju.pdfIn PDF document text
    • https://zozilevijuni.weebly.com/uploads/1/3/1/3/131383476/xamebarumada_satono.pdfIn PDF document text
    • https://dojulukasinu.weebly.com/uploads/1/3/0/7/130776790/fetimufodujaxo-wosofotekujazik-sodufopepoli-lofovabazejuze.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0487/0946/8310/files/jumibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9479/3110/files/chemistry_worksheet_lewis_dot_structures_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0097/7818/files/90908610176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0368/5275/files/spotify_premium_apk_gratis_descargar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8878/2236/files/wojutagosafaxesijak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/5248/4766/files/nalofotirozuriluxukimabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7217/5259/files/smith_little_torch_regulators.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0471/0678/5430/files/23278687463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2804/4698/files/boy_scout_orienteering_first_class.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5719/3895/files/lg_root_apk.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7043 5472 bytes
SHA-256: 7522d8c486a9b916035d681038bc7fe6e8dce961208458856494b56a2453fbff
font_01_sfnt_off000082da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82DA 2188 bytes
SHA-256: 04418fb88ab1e15f4109286efffbf09d48e4fc5cf1a955140b7a10e5218a9b47
font_02_sfnt_off00008cbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CBC 10112 bytes
SHA-256: c12f58821dcb7b77def0b28ec807477b029b4c2e3564f701761759e7e19c5b97
font_03_sfnt_off0000af9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF9A 16092 bytes
SHA-256: 2c5f1a2e3d9f683f6a217a47aeaaae813f7d4ef732a5ff54a929695507d09140