Malicious PDF — malware analysis report

Static analysis result for SHA-256 08f6612c837d6b7c…

MALICIOUS

PDF

45.7 KB Created: 2020-10-20 04:20:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e31244fa0a280936ac433d7de1ca0d4e SHA-1: 642a26d6ba4b00cecc69b94c8447b347e581fda9 SHA-256: 08f6612c837d6b7c8467f2a83c3d410e2db152de768d7e56631885035a2fd968
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://ggtraff.ru/pify?keyword=makro+black+friday+deals+2020+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4380395/normal_5f8e3205003d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383160/normal_5f8e098605aa5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381090/normal_5f8c0070c759b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380525/normal_5f8e0a29191a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366978/normal_5f8d89fd40ed3.pdfIn PDF document text
    • https://nukubutoti.weebly.com/uploads/1/3/2/3/132302768/levifad.pdfIn PDF document text
    • https://nulixedupalaz.weebly.com/uploads/1/3/0/7/130739510/60597de.pdfIn PDF document text
    • https://korodaziso.weebly.com/uploads/1/3/0/7/130740443/tutebojugufadu.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/1/0429/4646/1852/files/lotasuguwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2646/7992/files/icivics_all_in_a_days_work_review_worksheet_p.1_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6656/2966/files/6818505762.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2057/3608/files/crazy_cat_lady_doll.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/294fd129-2cc7-4e83-8cc6-f374128366d0/materiais_semicondutores.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4403c9a-d735-4195-b230-7fedbd9431e2/caballo_de_troya_4_audiolibro_comple.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7720b910-1465-4739-afb7-5943207d8abe/vesaxubufisulagum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2984be66-c6ef-4161-b430-def2ea701c44/27190129056.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b138d4d-4fc7-4166-a878-ba0d6d8e87c8/59655594651.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86139ca3-72a7-4836-9e2b-b61b0c6c656e/30119395339.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/2668/4320/files/how_to_remove_gum_from_glass.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9849/9997/files/dragon_city_apk_mod_hack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5217/8849/files/72982110901.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/4864/7835/files/slab_on_grade_design_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7498/0502/files/20468208694.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_off00007287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7287 5732 bytes
SHA-256: 9a98d9cca6990e19950dfbc255c3c3504e1bba526f6cac2e18225f5df8f93309
font_01_sfnt_off0000862c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x862C 10464 bytes
SHA-256: 96b84f69899a8eb978ab6455347df32c412b5694a399f64ee7189459338eebde

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