Malicious PDF — malware analysis report

Static analysis result for SHA-256 0532ff3d44e9e737…

MALICIOUS

PDF

44.2 KB Created: 2020-10-13 08:14:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 50db4f59ca020c6f004785ff53069622 SHA-1: 96a5f59caaeb9ccb6442c0edf2233c71f36952ee SHA-256: 0532ff3d44e9e7370a6adaab140aadefc711bdbed8f2a066b3cb33df76a87d08
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://gettraff.ru/strik?keyword=download+sony+tv+remote+apk In PDF document text
    • http://kalitim.samanthajeankosakowski.com/uploads/1/3/1/3/131383544/zabazoxixo.pdfIn PDF document text
    • https://site-1037875.mozfiles.com/files/1037875/43131952000.pdfIn PDF document text
    • https://site-1039992.mozfiles.com/files/1039992/26498626588.pdfIn PDF document text
    • https://site-1037878.mozfiles.com/files/1037878/matawunesugaxum.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/1/0434/0459/1271/files/wazejigofileduzukibaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0245/4428/files/angry_birds_space_premium_apk_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/8689/7046/files/41918236684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5809/4495/files/speed_and_velocity_practice_problems_worksheet_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/2933/3669/files/carex_bed_buddy_body_wrap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5a06149-fe0e-4e1c-9902-5d5bcb3fe20c/67519152711.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64e6503a-90e2-4d4b-a756-4e79845c67fd/57717863615.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d2616c3-bea5-47b0-a3b0-7966e0d67e00/vuzoke.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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_off00004780.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4780 6744 bytes
SHA-256: b29f9350a720d2da9dc50567d08c4a82684db1fcb28a47e3a5788345b392d808
font_01_sfnt_off00005865.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5865 5420 bytes
SHA-256: b0642966991fe7a2deb1e002e2dd18892cf90b7480f4feb82f9c988c3fdf3d74
font_02_sfnt_off00006ae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE2 10388 bytes
SHA-256: f03ededf92e7212c7edfe1d40620aab699314adb89dfbef25e06b26c61efec24
font_03_sfnt_off00008eb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EB2 16092 bytes
SHA-256: ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073

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