Malicious PDF — malware analysis report

Static analysis result for SHA-256 42acb12c8fb480e0…

MALICIOUS

PDF

35.6 KB Created: 2020-10-25 12:09:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 3482e6e2d8c153fb47ae8d0c94ef0db1 SHA-1: ea5dcf87aaa28ec477345adc888e76e8d159d201 SHA-256: 42acb12c8fb480e02d05c5549a388e240008b9fa9b681422f9ba04e509486bb2
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.link/pify?keyword=langmuir+aqueous+environmental+geochemistry+pdf In PDF document text
    • https://mizunawakore.weebly.com/uploads/1/3/1/4/131406356/zasidevipobimix.pdfIn PDF document text
    • https://panasijizikefiz.weebly.com/uploads/1/3/4/4/134446590/dopoforuzadaguw.pdfIn PDF document text
    • https://kokexofagisukop.weebly.com/uploads/1/3/2/7/132710589/7927841.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00004c1a.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00004c1a.bin)
    • https://s3.amazonaws.com/kopisigapub/periodontal_abscess_treatment.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/nafipofobipasorixolof.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/wakafogedugudaduxukibe.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/midamolude.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8227710-e75c-4365-afef-29ffbbbe3bb8/15075101395.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34c6e69d-c689-4b4c-9719-dc0aae14081a/wutox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a3df0b7-be46-452b-be24-7beac3c9a203/exercice_aire_et_primtre_5me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0be19f52-aa45-403c-8d60-6a91337237bb/antigone_full_play_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94f61e26-6399-4610-83dd-8bb3faa9ccc3/pedibixajulurugud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec87e1ed-7444-473a-89ea-61fdb8e0b228/xusejamibukirimodalipow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e84b6c1d-94d3-488a-87fe-d146ec1d44b4/what_type_of_organism_is_a_heterotro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6629/0076/files/weather_magic_mountain_vt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/7704/5924/files/popcorn_maker_walmart_canada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/6120/5924/files/the_walking_dead_2_trophy_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/3082/5128/files/minecraft_chicken_farm.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 extracted file (font_00_sfnt_off00004c1a.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C1A 5800 bytes
SHA-256: f95733d077c919354917aba2230506cf45383a49c8e19940cdfec4478805aa36
font_01_sfnt_off00005fb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB0 10028 bytes
SHA-256: 9f47ff8e570a4a809966819f53afda7341a21e675aed6d257a789b0fbea56b77