Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb43bac0b6ffcb1a…

MALICIOUS

PDF

48.3 KB Created: 2020-10-19 18:40:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 1193046b62b5535b48ad3a40cf0f2676 SHA-1: ef0c7061ad47a4f05c76675a2ce1de82871cf127 SHA-256: bb43bac0b6ffcb1a4810b6ef96b7fad2e4720661f1c0ce09d340c9f7c8cdb8a7
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/strik?keyword=tf2+comic+1 In PDF document text
    • https://rolosakuzorega.weebly.com/uploads/1/3/1/3/131379035/debulevepujale.pdfIn PDF document text
    • https://rivisoni.weebly.com/uploads/1/3/0/7/130739016/f71a1c6.pdfIn PDF document text
    • https://lowizozexide.weebly.com/uploads/1/3/0/7/130776176/gevebit-kizetisivuje-zedidesoxip-ziturikupeguj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370062/normal_5f8aeb74ca2d8.pdfIn PDF document text
    • https://leruzifu.weebly.com/uploads/1/3/2/3/132302941/06fe18c1f.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/8626484.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/mezevoxinokimuwamibu.pdfIn PDF document text
    • https://pujatimosu.weebly.com/uploads/1/3/2/6/132681823/88da28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368492/normal_5f8a0c1a1203e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365540/normal_5f873001e0b63.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366309/normal_5f8725de2583f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366321/normal_5f8a2a4e4f51f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380237/normal_5f8c85f898bfd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6694/5447/files/single_phase_semi_converter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6660/4182/files/pelonis_radiator_heater_not_working.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/3557/3663/files/spider_man_far_from_home_putlocker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6157/5834/files/lokoremo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3428/2654/files/tutewogedagosenixulaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9980/8149/files/26929418936.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4359/3109/files/understanding_public_policy_thomas_dye.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

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_off00007534.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7534 4128 bytes
SHA-256: e28f6859ced3cf7fbedfe5147bfc8f1854ae6a739d44cd05730715b2ee35bbd6
font_01_sfnt_off0000832b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x832B 10288 bytes
SHA-256: cb88544d0a264eccf39f842e6e2c3261d3b9facd5dbdff8cc1aa2ace9019dea7
font_02_sfnt_off0000a627.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA627 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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