Malicious PDF — malware analysis report

Static analysis result for SHA-256 9135a2a46feace8f…

MALICIOUS

PDF

44.2 KB Created: 2020-10-19 19:19:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 9f277515704f289839a852f6a680bed3 SHA-1: 5e42e300d35fba2a41ce61ac3719a0fb4b41e602 SHA-256: 9135a2a46feace8f5d6431f4312843eddbb8d7af445ac087e7b90c721cb4b410
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.me/123?keyword=instructions+meaning+in+computer In PDF document text
    • https://jikeberu.weebly.com/uploads/1/3/1/8/131857846/laxevojeritafusobub.pdfIn PDF document text
    • https://junoxavod.weebly.com/uploads/1/3/1/3/131384771/4692960.pdfIn PDF document text
    • https://rojusonevupa.weebly.com/uploads/1/3/0/8/130814232/foxujabejamijitam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368740/normal_5f87f2b6c8e11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368972/normal_5f888a2dacffc.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/202a277b-7918-4ae4-9fe3-cd36e60ea461/bexel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9aeecc59-beae-4ecf-aa94-a25f9479a25a/modern_programming_languages_2nd_edi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/414cc569-fe79-4126-82a3-cd6e08f86875/84279220342.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fef286f-1c61-46c2-8f30-c1816597af33/70056044061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8307/0629/files/euripides_the_bacchae.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1267/5995/files/79475170675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7658/2552/files/goxafewijugitofofuzagexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6069/0589/files/dom_kennedy_from_the_westside_with_love_2_download_zip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3803/8423/files/loperabusuwajux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7584/3736/files/kisijeledoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3071/5288/files/majority_rule_in_company_law.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/3076/0600/files/35921535341.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/4298/6903/files/rajipusuwiroxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/8177/5287/files/67562594205.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 7

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D66 5156 bytes
SHA-256: 7b50faac719b2a9c86ec4359d4be89aafce8a124f0716b5a0acabf43b8dbd8cf
font_01_sfnt_off00007ed4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED4 10624 bytes
SHA-256: abf078bec4533fe686e069952de97889aa348a7629a0d0f01cb406100de27a5a

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