Malicious PDF — malware analysis report

Static analysis result for SHA-256 68b0186ec7b79718…

MALICIOUS

PDF

45.7 KB Created: 2020-10-16 22:22:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: dc31bf277db58d7fc1a3ba48418cbec0 SHA-1: f0383024e6799dd738f4a853b2f566c5145277d3 SHA-256: 68b0186ec7b7971815c88b1f777a33a4fd49bbb3105afd806c6cd97881045492
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/123?keyword=subaru+eyesight+manual+2020 In PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/foburadip.pdfIn PDF document text
    • https://mapipuluzobeb.weebly.com/uploads/1/3/1/3/131398440/muwogul_puponesarosavur_turulod.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/b14c538121.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/1392291.pdfIn PDF document text
    • https://povutepumik.weebly.com/uploads/1/3/2/7/132741486/kanibupopakuberasup.pdfIn PDF document text
    • https://nanorobudilason.weebly.com/uploads/1/3/0/7/130775181/jilejobelado.pdfIn PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/lakorixa.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/1/0482/2643/5226/files/how_to_reset_shark_ion_robot_vacuum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/4864/7835/files/danokusijesusodidibusirul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0335/7602/files/ritokabebaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0910/0957/files/monster_hunter_stories_mod_apk_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6810/2558/files/nimituweluteminipene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/7306/9990/files/wozik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0023/3635/files/nebraska_football_new_uniforms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/0886/0575/files/how_old_is_bret_michaels_now.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/1683/8049/files/furano_biei_japan_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67014609-fa97-449a-9054-287b936e7169/vutosawusepisumafebufiluz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25a5f509-3262-4b48-8037-3ff282f1f94e/3727458588.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c89e91fd-916b-47b0-8bd4-1f97650fc5fa/77948784934.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20a0b714-9642-417f-bfc2-4fb03c9d6daf/91160663190.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7180/6366/files/lovivuvodeginoruzukim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/5673/2581/files/59716576076.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6090/4604/files/62953083946.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2699/7663/files/elite_four_emerald_strategy.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_off00007248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7248 5716 bytes
SHA-256: 3a7b5ce4c09895ef42d1cd12c0e357867e7b9eafef7823c4852db575db22f4b0
font_01_sfnt_off0000859f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x859F 10468 bytes
SHA-256: b640b996aed36ce59f2caa83fb95e86d492b1e812962edad747eac75089af079