Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1693c32551c3c73…

MALICIOUS

PDF

56.9 KB Created: 2020-10-29 00:25:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: e6857485de978c0b8f2cc028b77be293 SHA-1: e803dd53091cd03dd030e62e4fde6ec892dcb151 SHA-256: f1693c32551c3c736a3b0f84840d92499539ed06adb07e9006142e9a2109586b
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://ttraff.cc/pify?keyword=super+mario+world+flash+unblocked+games In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369916/normal_5f88d98d59632.pdfIn PDF document text
    • https://povelelowu.weebly.com/uploads/1/3/4/3/134331265/6476884.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403947/normal_5f941df19f836.pdfIn PDF document text
    • https://jiwadurator.weebly.com/uploads/1/3/0/7/130776405/ledekifut-renifasomo-goromoda-zoledadelax.pdfIn PDF document text
    • https://bogigusojuvifu.weebly.com/uploads/1/3/4/3/134316749/31f1ddc93dd.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/wirexanusir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375894/normal_5f8b4da57202f.pdfIn PDF document text
    • https://kiseridebajesa.weebly.com/uploads/1/3/1/4/131408791/1813485.pdfIn PDF document text
    • https://pumewigegokofav.weebly.com/uploads/1/3/4/3/134317234/gekalano-nukepemenirepi.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/1/0429/7588/7523/files/135592524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/7760/5792/files/cartoon_network_stickers_apk_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/9331/0631/files/lekefuxetupedin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/4234/1542/files/guide_ffxv_franais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/5827/2691/files/thalia_percy_jackson_actress.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/0291/0660/files/34835134022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/9418/6430/files/descargar_bleach_brave_souls_apk_obb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0225/5770/files/murray_24_inch_riding_mower_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9002/7703/files/cord_of_three_strands_wedding_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8320/9633/files/samsung_galaxy_a5_2020_android_9.0_pie.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000ae06.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xAE06 21892 bytes
SHA-256: f8ebff9f00f25c38e8022f820948ba6c7af2a46de26666c9d40d36c0c6e1da79
font_00_sfnt_off00007309.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7309 5968 bytes
SHA-256: 0a7e67db580703ff316e2ad695411b301a0e14aa5956641a711b0a7a267cb8e0
font_01_sfnt_off0000873d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x873D 12324 bytes
SHA-256: 8d1a86cf06ebe2a4c495c2d4d020b7ac969ea8d427f25302fdc3fc21bfd7cfb1