Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3bb917062ba79c7…

MALICIOUS

PDF

52.7 KB Created: 2020-10-30 11:41:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 22b07a7852a2ef9b53ed4713e897f729 SHA-1: 633bc867978cb2d532febf178c754d45c4757c08 SHA-256: e3bb917062ba79c73dc01f0db062d9a26830002e10bb6f94255a4d8553a1b107
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://cctraff.ru/aws?keyword=mckinney+police+department+facebook In PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/78464618280.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369775/normal_5f87f51506670.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384817/normal_5f9418d30950e.pdfIn PDF document text
    • https://wazuwivanesigov.weebly.com/uploads/1/3/4/4/134431766/1379207.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006cd0.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006cd0.bin)
    • https://cdn.shopify.com/s/files/1/0268/7192/2880/files/ib_psychology_study_guide_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3541/7502/files/bicycle_exercise_stand_best.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/1237/7754/files/pathfinder_kingmaker_monster_tactician_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/2484/3420/files/magnum_alert_1016e_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/7952/3240/files/whatsapp_application_for_android_2.3.5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/def71e8d-8127-46be-8ee0-a9fbfbb1855b/62676628148.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/6589/9715/files/tazarozitodumewot.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_off00006cd0.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_03_sfnt_off0000b037.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_03_sfnt_off0000b037.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD0 5432 bytes
SHA-256: ce3f1bd5d6da9997fed1905f8e7e1b5286e4f3e55928998c451ae8b48ff032e1
font_01_sfnt_off00007f45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F45 2968 bytes
SHA-256: 0c6f54a9bd7c7057a6f38c57fcee7c30774b3ca1a3add6817064779333eaa545
font_02_sfnt_off00008aaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AAA 10992 bytes
SHA-256: 82ccb4998b040d08ebb721d50e296569767b27005673aceee656c49649ea3470
font_03_sfnt_off0000b037.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB037 16208 bytes
SHA-256: 844fb27054059bbe8e24107f7623dfc8b3714af0429cc888d8296577745ef093