Malicious PDF — malware analysis report

Static analysis result for SHA-256 630bcac27d3b749c…

MALICIOUS

PDF

49.6 KB Created: 2020-10-16 16:12:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0e2a6ac035547c17f8914da94cd1bd4d SHA-1: e6300e20620e9f0f357af66e313281f5955a7941 SHA-256: 630bcac27d3b749cf4e6f3b3f886e5a57d8eb589106ac3770a582a11fd8c7e91
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=hp+pavilion+network+drivers In PDF document text
    • https://wedebiki.weebly.com/uploads/1/3/0/9/130969436/xokag_viporemore.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/93049f265a0000.pdfIn PDF document text
    • https://sibakixode.weebly.com/uploads/1/3/2/8/132814768/8693346.pdfIn PDF document text
    • https://noxepelobisuse.weebly.com/uploads/1/3/1/8/131871648/nuteveg.pdfIn PDF document text
    • https://remewizefo.weebly.com/uploads/1/3/1/8/131856163/bugege_soxowi.pdfIn PDF document text
    • https://rivisoni.weebly.com/uploads/1/3/0/7/130739016/wubolabiv-jajujove.pdfIn PDF document text
    • https://duxixujojive.weebly.com/uploads/1/3/0/7/130739103/sabiwafewonugipufa.pdfIn PDF document text
    • https://winomumamo.weebly.com/uploads/1/3/1/0/131070375/2959267.pdfIn PDF document text
    • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/3835794.pdfIn PDF document text
    • https://rolosakuzorega.weebly.com/uploads/1/3/1/3/131379035/debulevepujale.pdfIn PDF document text
    • https://zidabowejixu.weebly.com/uploads/1/3/1/1/131163559/tinaruzukoxogok_tirunom_menawixukujuz.pdfIn PDF document text
    • https://dojulukasinu.weebly.com/uploads/1/3/0/7/130776790/8548352.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/1/0437/8748/5333/files/critical_learning_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/8031/9645/files/fisher_price_lamb_swing_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9074/6785/files/blue_demon_welding.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9752/0801/files/auvio_speaker_pbt500_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab2ecaf3-b04c-414e-acb3-45454d43fd6b/dafitexupodomipum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f53110f-9a15-43f9-94f0-ac9212a33743/fagevagixudokij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/4494/5051/files/spirit_airlines_backpack_reddit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/2200/2587/files/wendys_jr_hamburger_ingredients.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/9780/9830/files/80230355718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9575/2858/files/seeing_the_bigger_picture_competency_example_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9306/4870/files/39567685938.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_off000083cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83CB 5128 bytes
SHA-256: 051d2a0dee8b5d4a05c2cd4cb6983f29281d9fb9fcfb21fb12102878df517cef
font_01_sfnt_off00009554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9554 10444 bytes
SHA-256: b514eb59443791109c26af01c61077a037489b95f52e50ed6dec20b4a60abb3a

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