Malicious PDF — malware analysis report

Static analysis result for SHA-256 f294baf749e98062…

MALICIOUS

PDF

56.4 KB Created: 2020-10-28 23:40:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 03aacf0f0f06b742018982aefb670a11 SHA-1: ae0cad2e38a5563f423ad712d15a9a09ff8e1c32 SHA-256: f294baf749e98062c3ace0acec4130beb32a43bc1d97fc5a3aaffa8cc356c2b9
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.cc/pify?keyword=jedi+guardian+stat+priority In PDF document text
    • https://cdn-cms.f-static.net/uploads/4381340/normal_5f8cf3b46c01b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373248/normal_5f99bb91d523e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407571/normal_5f97a4ecebf6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382412/normal_5f8f28424ad4e.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/5333555c-1906-4b5b-8d63-b0117bbd3484/gipabufeguro.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/calculus_course.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/4941/0456/files/revlon_colorburst_balm_stain_adore.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/29259174865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7437/9173/files/35291485685.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/87908603570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0314/9479/files/ipsec_vpn_configuration_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4db99328-ecc9-449f-afa4-525843563bc2/xogediwux.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/nursing_intervention_for_sleep_deprivation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6458cf8c-5dbc-4245-8d6b-df53b61a83b8/dasilazalepikosit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89c60f11-2f23-4fa0-844a-c3cfeeda5027/befubonopukejiler.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71477460-1659-4ec8-915f-032d0a43a4f3/la_chvre_de_monsieur_seguin_ce2.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/do_you_really_want_to_hurt_me.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/10677316649.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/916bb5df-3408-46a2-95bd-06b384376a44/funepiwulukasin.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000082ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82CA 5184 bytes
SHA-256: 47647a4f21b2d225642cff1b7f43e6b1b9e7ba0515486c293509e6f421e81c4c
font_01_sfnt_off00009487.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9487 13000 bytes
SHA-256: 2fddf77f9e16eee6456c5b6a746e75aefc27a2cb6e766c389aeb5a66563cd08d
font_02_sfnt_off0000be9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE9A 16220 bytes
SHA-256: 8a11c7225569cd2a0a4f43ddcd357a4161a25f102016c7db1283a4f1d85683ed