Malicious PDF — malware analysis report

Static analysis result for SHA-256 040e84a24e01498f…

MALICIOUS

PDF

48.5 KB Created: 2020-10-13 16:25:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 5366b94a684849ba59b8c9395830a132 SHA-1: ebb2071c57828c457c7d8932def656e2175263de SHA-256: 040e84a24e01498f4c16284a0cca6e696ff1ed75170c0a9a4f26ebd2dd607667
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=latest+android+phones+under+6000 In PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/nukunuraki.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/tadib-pepalitegugoj.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/bawap.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/roriturosiw.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/wovexofek.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/jolon_koxuzozudanik_makilitinami.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/1/0439/8468/3166/files/gakuramonofalefawedekejiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6003/0359/files/like_water_for_chocolate_february_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2453/1101/files/yanmar_tractor_models_to_avoid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4525/1989/files/i_say_yes_to_my_lord_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9674/2815/files/bryant_plus_90i_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fb2f023-82ca-4780-a535-24314dca824c/16761634541.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3825bb7-6023-4dfd-bdac-de5f4d1a10c4/220284143.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007eff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EFF 5252 bytes
SHA-256: 081bac194898514d79d2916c88dda32589926fbd9df0b6a18d96b7e7c7f20b85
font_01_sfnt_off000090ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90CE 10656 bytes
SHA-256: 34edc68bc22b9629c8c7f29e88f13df9204aed70c971afcb64bbe792bcb2cf6a

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