Malicious PDF — malware analysis report

Static analysis result for SHA-256 064a49ae8f88c358…

MALICIOUS

PDF

61.2 KB Created: 2020-10-15 07:22:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 49790930b9bb17682e6f5fe5b7785ce9 SHA-1: e2bd3ec009f36d9829e6c85ad39d5af44b99e684 SHA-256: 064a49ae8f88c358e5acc9982c29df7b7e54a1545a81c4d0ad65c978bda920af
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://cctraff.ru/123?keyword=laporan+usaha+dan+energi+pdf In PDF document text
    • https://site-1036698.mozfiles.com/files/1036698/selelekisavubalipev.pdfIn PDF document text
    • https://site-1042617.mozfiles.com/files/1042617/desorizubabujoduzogopej.pdfIn PDF document text
    • https://site-1038553.mozfiles.com/files/1038553/48021944299.pdfIn PDF document text
    • https://site-1043606.mozfiles.com/files/1043606/65626243670.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_5f86fedae5354.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366374/normal_5f870fdca8cc8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366407/normal_5f875dd01d90c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367648/normal_5f875adceb25d.pdfIn PDF document text
    • https://pepotoxuxomupav.weebly.com/uploads/1/3/1/4/131483830/womobiwapusasa-dibibufawusibax-jivurutikanug-sufine.pdfIn PDF document text
    • https://zelapagetuwuj.weebly.com/uploads/1/3/1/4/131406140/jezuwitotegufe_giwodo_subuxit.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/d1ee3c84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367279/normal_5f8737d3f191e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_5f8741b891d80.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/1/0484/8972/6107/files/iphone_x_wallpaper_live_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3824/3498/files/76419409915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/5759/7595/files/womens_dumbbell_workout.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/8249/2325/files/sadisotonumalamegutotez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/8619/9975/files/esmo_guidelines_liver_metastases.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/6618/1028/files/xobadipivivi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0099/3691/files/88316815913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1791/9909/files/delaterimaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/71526304020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6617/1287/files/vuwugijumugikoxowosidekiv.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009c82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C82 5212 bytes
SHA-256: e2fe9f1f00068f692c6f005c61a53845f3dbe27a7e76563b437c3df74850869c
font_01_sfnt_off0000ae36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE36 10632 bytes
SHA-256: c11996928c028425e7ecb7df2b8978e15cb2c3555d85d757f9ff0fd2e2d829b0
font_02_sfnt_off0000d2b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B1 16076 bytes
SHA-256: 8cf3fb89ff5359e2db2b4357ef3bdb9a23528f67d1395acde2bb1fe78cf5522a