Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5c29baa3c8b0c49…

MALICIOUS

PDF

45.5 KB Created: 2020-10-15 13:53:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 03e9d5bde6dc207475f385f6491db690 SHA-1: 7823d865efe9617d1fb5075b696de0111264381d SHA-256: e5c29baa3c8b0c49a44de843a844dd3656552a0a22ccf3ce7b2f9e058aa5a697
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/pify?keyword=digestive+system+worksheets+for+6th+grade In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370076/normal_5f87faed96d0a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365627/normal_5f87702f3db52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367950/normal_5f87fa251fb87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366003/normal_5f874a8970779.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365998/normal_5f87bd232769f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365619/normal_5f87348064a28.pdfIn PDF document text
    • https://site-1043119.mozfiles.com/files/1043119/youtube_apk_for_mi_tv_4a_download.pdfIn PDF document text
    • https://site-1039583.mozfiles.com/files/1039583/draconic_bloodline_sorcerer_guide.pdfIn PDF document text
    • https://site-1043887.mozfiles.com/files/1043887/28864932288.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368496/normal_5f87b5b713dbe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368229/normal_5f87c60c2c4d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366664/normal_5f87adb620ee2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366956/normal_5f8757ef2a7e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369631/normal_5f87e4cf82797.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/687d340e-1f97-4e0a-ab07-37fad90f4380/14760268714.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/598830b8-360a-4345-94c8-0d954a78c269/lodigojedobowuvosowizedu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d1ae9ab-4907-4d59-869c-b9f9a76c4a77/26627488582.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8bb3de1-a3b7-4169-bf9f-964f0e755913/29466976952.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db1ee10a-e79c-4551-9f4b-115db626f1ef/54238499575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0298/5621/files/mlp_discord_color_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9041/4230/files/rikon_10-305_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/4704/5278/files/wawa_job_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2067/1384/files/jatupujipidor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/8567/0816/files/lemuzir.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_off00007194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7194 5760 bytes
SHA-256: 8e4c8e60ba02d3defee1c5a7e32c2b78d0c95d1e4b5ea51e0756a9f54a28ab1c
font_01_sfnt_off0000852e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x852E 10280 bytes
SHA-256: 3c6f98c6baaa246cee6e28005193045483ed9873a6f2c818acd7687ea220eed1