Malicious PDF — malware analysis report

Static analysis result for SHA-256 036863312abdac4c…

MALICIOUS

PDF

35.6 KB Created: 2020-10-29 10:36:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: cf332326451469606ff10b61f20b426f SHA-1: a53fe56be45f1445a121ce86fa2671ba6663b035 SHA-256: 036863312abdac4c3f4b0b1b49651eadc028e45b0a1e819b59efc71a54d631d6
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://gettraff.ru/aws?keyword=ajax+tutorial+pdf+w3schools In PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/297c0.pdfIn PDF document text
    • https://vikumeniwexawud.weebly.com/uploads/1/3/0/9/130969440/2545999.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375073/normal_5f8c54b4a5870.pdfIn PDF document text
    • https://mekuxiwefajup.weebly.com/uploads/1/3/0/7/130739023/5829299.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410985/normal_5f959561ab52f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367964/normal_5f932b5546d2a.pdfIn PDF document text
    • https://xitemexum.weebly.com/uploads/1/3/4/3/134311382/a551852022ea.pdfIn PDF document text
    • https://difomojixi.weebly.com/uploads/1/3/4/3/134319012/f2fb6ff.pdfIn PDF document text
    • https://fewefemuge.weebly.com/uploads/1/3/4/3/134372507/835172.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/gapovowumepekegosiza.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4a023a4-1bb8-4089-a038-c3e7ad18a0b6/mat_danh_iris_1_thuyet_minh.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/2294/2871/files/ncees_pe_exam_reference_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8235/9994/files/97423087979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9690/2294/files/80165244185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/2185/2582/files/benupetapirozugopujaguja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/5977/1029/files/big_hero_6_wasabi_tools.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4164bfda-99fe-4af6-81dd-75251b33eba1/monabafufakape.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87b4db5b-002c-4a26-8f18-bca654ac52f7/karonawirigaxelulawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/4340/5991/files/ghost_recon_breakpoint_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7841/0942/files/liderazgo_y_comportamiento_organizacional.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98e1d755-f1a7-408c-b6d8-cf26dda13895/68752590275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2612/8289/files/1_x_30_belt_sander_with_5_sanding_disc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/115c6614-3c80-42c7-9e13-1e72a6072302/jefaxiz.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_off00004d10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D10 5632 bytes
SHA-256: fd3038d50050c2abd12de3648d3dea22f77791f04322906a9ab810a8b686ffc0
font_01_sfnt_off0000604f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x604F 9804 bytes
SHA-256: dd14fa25981d28ccb76e119cf1a5894041bdcf258634f0aec905d2d3ecd11e70