Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fb6e352ea8f954c…

MALICIOUS

PDF

61.4 KB Created: 2020-10-07 05:34:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 50e308f4b00cb194fab5ecb24978c2a9 SHA-1: 7498fd96d506f110c79f5e9be58cb5b695241755 SHA-256: 8fb6e352ea8f954c11ada2b72bbe04d45540316fa464a159da70df539107d7e8
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/strik?keyword=epigenetics+david+allis+pdf+download In PDF document text
    • http://xorep.musicmattersintheuk.com/uploads/1/3/0/7/130776485/0673694fec1.pdfIn PDF document text
    • http://kitol.thomastrevethan.com/uploads/1/3/1/4/131455069/lerewan_jigode_fetafavijunonu_duwef.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/1/0479/5639/4140/files/vocabulary_workshop_level_g_unit_11_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0866/3457/files/84122840430.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/5140/9304/files/matcha_crepe_cake_near_me.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0467/7468/1753/files/27753185138.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5432/4117/files/xisofoxuxefogades.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9376/0931/files/9751093073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0321/5778/files/ultimate_sherpa_throw_60_x_70.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1588/9305/files/najufabuperanovoze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6111/6064/files/amc_theater_huntsville_tx.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3058/4728/files/school_backpack_size_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8091/6893/files/85564277226.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9159/3889/files/pajozolevudonokiwarofiwe.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009d0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D0B 5336 bytes
SHA-256: 98f2d608e29b5cd0243cae0050c556d82abdbdce54a8407d188e6bf8cfd17bd0
font_01_sfnt_off0000af6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF6C 10340 bytes
SHA-256: 2822b743cdf0c5cd6eb2577ebcdfb94b0297c836afab8e1cf04644f2af16caaa
font_02_sfnt_off0000d2fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2FC 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501

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