Malicious PDF — malware analysis report

Static analysis result for SHA-256 eddbe153f7efb055…

MALICIOUS

PDF

45.4 KB Created: 2020-09-30 19:13:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 28e22fe4906aa0ed5e4cd4742937f345 SHA-1: a544ef3577bb6e61f248469b294e3cbe6ab05483 SHA-256: eddbe153f7efb0550fd0cf8aed974f7114388793f28c6801714a06e218f60ce2
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=506+assignment+3+answer+in+hindi+pdf In PDF document text
    • http://files.rhinotruckparts.co.uk/uploads/1/3/1/4/131406104/roleduvibudapebov.pdfIn PDF document text
    • http://files.neilbushby.com/uploads/1/3/2/8/132814166/nawewikiwo_xunutozewija.pdfIn PDF document text
    • http://files.raglandwrites.com/uploads/1/3/1/3/131398143/9286165.pdfIn PDF document text
    • http://sewatu.totalsolutionscomm.com/uploads/1/3/0/7/130738546/gozikibedagulig.pdfIn PDF document text
    • http://lituk.thecrossingwv.com/uploads/1/3/1/3/131398102/zepefitugumosox_vozajubomazel.pdfIn PDF document text
    • https://site-1037846.mozfiles.com/files/1037846/tizivefigot.pdfIn PDF document text
    • https://site-1038789.mozfiles.com/files/1038789/garifa.pdfIn PDF document text
    • https://site-1036743.mozfiles.com/files/1036743/sakuxejebenibe.pdfIn PDF document text
    • https://site-1036969.mozfiles.com/files/1036969/32512609955.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/4330/9726/files/blade_and_soul_revolution_class_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3150/2749/files/16718474054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3815/4650/files/grandfather_s_clock_euphonium_sheet_music_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6248/4392/files/amcon_list_of_debtors.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6012/5080/files/leave_request_mail_to_manager_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/3645/5324/files/surety_bond_california_freight_broker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7849/2062/files/73768008655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8693/6219/files/whirlpool_dryer_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7593/0774/files/column_graph_worksheet_year_5.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005543.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5543 6004 bytes
SHA-256: ff13c6757947f07856dfba75892fca4a2aed535a0d2c18bc8e98021da927341e
font_01_sfnt_off00006992.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6992 9908 bytes
SHA-256: 37213aa0a431d5338e9a383932945875d2b71a0f14364d28204c790209fc8548
font_02_sfnt_off00008b96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B96 8700 bytes
SHA-256: e1dd1cd04646a72ce5a792dc9addfa5a2332b93790992bbd9c9eab1a67581c2d