Malicious PDF — malware analysis report

Static analysis result for SHA-256 cadba8cbe16f2ea6…

MALICIOUS

PDF

53.1 KB Created: 2020-10-08 14:02:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 51fbbcbf3eed1c43500b9e728a1a87fd SHA-1: 2a0af6ddcacd03df351dcdf02e3556c4404749e1 SHA-256: cadba8cbe16f2ea6f923526717e096db4a20a8d8d0469be58c6fb7b09f92879b
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/strik?keyword=greek+bible+translation+pdf In PDF document text
    • http://dalifotet.aperfectpairshoes.com/uploads/1/3/1/4/131437615/1482950.pdfIn PDF document text
    • http://fesak.blackpoodleteaco.com/uploads/1/3/1/3/131383483/bawefuririsoleb_rimebazubifila_sujinifi.pdfIn PDF document text
    • http://files.southhighlands.com/uploads/1/3/1/3/131379205/fefadupotavufe_xikasupofu_birepafisowu_wazoxewopisosa.pdfIn PDF document text
    • http://files.larondedesabeilles.fr/uploads/1/3/0/7/130776539/pujowipen.pdfIn PDF document text
    • http://potobiw.meettheauthorpc.com/uploads/1/3/1/4/131406736/pixuvezino-saronumep-solakuf.pdfIn PDF document text
    • http://nufotuwav.shift-counselling.com/uploads/1/3/0/7/130776886/d78b35f6095.pdfIn PDF document text
    • http://buguzi.thejoshuaquilt.com/uploads/1/3/1/3/131383791/tatakafikokaz.pdfIn PDF document text
    • http://files.dakotadesigns.net/uploads/1/3/2/6/132683463/risiniziwuromud.pdfIn PDF document text
    • http://files.shenaazjanmohamed.com/uploads/1/3/0/7/130775727/rijejowavova.pdfIn PDF document text
    • http://neremi.mylappetbed.pet/uploads/1/3/1/1/131164537/8a716774cc0f3a.pdfIn PDF document text
    • https://site-1036627.mozfiles.com/files/1036627/balanezalorizufimud.pdfIn PDF document text
    • https://site-1043087.mozfiles.com/files/1043087/32187610474.pdfIn PDF document text
    • https://site-1042884.mozfiles.com/files/1042884/juvabexot.pdfIn PDF document text
    • https://site-1039235.mozfiles.com/files/1039235/vivazenijob.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/1/0484/7062/2358/files/buddhanet.net_wheel_of_life.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4313/3352/files/71343024238.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2406/3392/files/truss_bridge_parts_names.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/5110/9537/files/94541417929.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E66 5268 bytes
SHA-256: 135a19a4d4ae5a129f2e31711e7a0a2df85f496a15aa665fe1b477fe8fe74357
font_01_sfnt_off00008059.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8059 3124 bytes
SHA-256: 0cb7637f620a8661c64cae866983457e5737e7beff193f3f4ecfacd237495c15
font_02_sfnt_off00008d30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D30 10120 bytes
SHA-256: c0b57b678641792a05642b005fd9b9e770322a3f3ac6978b229142b678009822
font_03_sfnt_off0000b003.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB003 16708 bytes
SHA-256: 98df6bd1c6f3412cfd960348b93c3923e30c6f9d3d1b3c14b610ac8123cdb512