Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd68a79bc83ce358…

MALICIOUS

PDF

41.6 KB Created: 2020-10-25 06:15:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: e22ec66c1da19b7259dadd4e6557255e SHA-1: c5a4d05f26029bce68372527410438c9c9e08ed1 SHA-256: bd68a79bc83ce3582a75c955440184802ec80ac4ddc6335c6a8c90f3bbf2eb67
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/aws?keyword=pdf+gametogenesis+pada+manusia In PDF document text
    • https://sujajikozodes.weebly.com/uploads/1/3/1/3/131384638/03069993f12a56a.pdfIn PDF document text
    • https://zadumeredevasax.weebly.com/uploads/1/3/1/4/131453870/9038680.pdfIn PDF document text
    • https://valoxapemep.weebly.com/uploads/1/3/4/3/134305175/paxatuvilisove.pdfIn PDF document text
    • https://vevejeda.weebly.com/uploads/1/3/0/7/130776099/5607706.pdfIn PDF document text
    • https://xotukejurivaj.weebly.com/uploads/1/3/4/0/134016857/5657570.pdfIn PDF document text
    • https://rikisuluwujufa.weebly.com/uploads/1/3/1/4/131452938/dixumuku.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380237/normal_5f94df6641d00.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369334/normal_5f8a69e2be7d0.pdfIn PDF document text
    • https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/diresaku_fezigeleri.pdfIn PDF document text
    • https://tibaxefuxi.weebly.com/uploads/1/3/4/0/134017075/kafek.pdfIn PDF document text
    • https://wemibevufiwoseb.weebly.com/uploads/1/3/0/8/130813314/takirak.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/sover-goxixejuxipilas-sibekuvuf-dewete.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/1/0434/1779/6770/files/91466012639.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/9461/7498/files/word_sauce_cheat_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5417/7185/files/group_verbs_list_with_bangla_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1344/7584/files/chaos_insurgency_logo_png.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2836/3939/files/tip_calculator_android_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4637/0471/files/alameda_county_birth_certificate_notary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8140/9713/files/323520772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1609/3849/files/24_371_esplanade_scarness.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_off00005f67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F67 5232 bytes
SHA-256: 37228ba3fcec2c3fa0e2de7762a591096dfd96a84011d771edf114b987e082c9
font_01_sfnt_off0000712b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x712B 12352 bytes
SHA-256: 79a084fe0e399dc64f3a902a75aec94f3a287791fba9370c33560a39a7ec515f

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