Malicious PDF — malware analysis report

Static analysis result for SHA-256 b07729a4bc9a2756…

MALICIOUS

PDF

46.1 KB Created: 2020-10-18 03:00:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 973a3cc582f0e84c902c1271b6cf76e4 SHA-1: b4c337a4bdab1be9172291f1a982f43ad350dc32 SHA-256: b07729a4bc9a275644d6f1dc7412d4441172bd98796236de1b448fcb089eb25f
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.link/123?keyword=fluid+mechanics+pdf+for+ssc+je In PDF document text
    • https://besavikeneg.weebly.com/uploads/1/3/2/8/132815808/punuwagevugupeb.pdfIn PDF document text
    • https://berajuvexoru.weebly.com/uploads/1/3/1/8/131860787/fuvoz.pdfIn PDF document text
    • https://pimupaxepa.weebly.com/uploads/1/3/1/8/131857198/61d4eb1.pdfIn PDF document text
    • https://mabanopovofed.weebly.com/uploads/1/3/1/4/131453130/382f8cca1f0.pdfIn PDF document text
    • https://buluzuzumaz.weebly.com/uploads/1/3/1/6/131636727/vusidosotuzoxe_xudoxav.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/1/0434/1887/8104/files/kanagitate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6093/1991/files/20_amino_acids_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1678/0951/files/bikram_yoga_long_beach_ca.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1496/5413/files/tap_tap_apk_download_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7831/2625/files/49064764737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6485/2634/files/48544651306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9958/4680/files/norton_field_guide_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7220/0608/files/1880_philadelphia_silver_dollar_value.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/2133/1364/files/module_9_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8291/7053/files/14245667131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/6680/9241/files/not_another_high_school_show_parents_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e18e830-5e32-4edf-92c3-83dd193af9d2/82822251921.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77c4b4c0-bb90-45a2-8857-89f18206aa88/1967344800.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65e1475d-3225-4901-b535-04ac5c653c40/sazusoluretidagebimapi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b77cb024-603f-4f32-9ed0-217a11a3a26c/46947259766.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fae4e25-2ba5-41a4-9aff-e046cdbba01a/dilosataforofijogax.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_off000075aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75AA 5424 bytes
SHA-256: 61c1bbdb9f8d5d1b1634e51fbaec35fe603e1a035bb398cd5a00c742e7171779
font_01_sfnt_off000087f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87F4 10192 bytes
SHA-256: e5a8e79493fe89fff219de363b1f214666acea57c1e1146dda02ef6ca88363e4

Open this report in the interactive analyzer, or submit your own file for analysis.