Malicious PDF — malware analysis report

Static analysis result for SHA-256 484910e5eb1ea544…

MALICIOUS

PDF

35.8 KB Created: 2020-08-27 19:17:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 083048033fa2a5b22e539f500e0da450 SHA-1: e06f079c1715a39e9fe4222d39695eefa04b4044 SHA-256: 484910e5eb1ea54404f5b48174911fe8846ba7bc679cd8ee5b4b3b7976528134
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.me/pify?keyword=final+fantasy+x+international+iso+portugues In PDF document text
    • http://files.evelandfarm.com/uploads/1/3/1/4/131436971/93088aafe1eb3.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/1/0431/3248/5793/files/pumaresidupizosovemimu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/atresia_pulmonar_con_septum_intacto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8443/7922/files/single_variable_calculus_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4497/7305/files/nasum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9827/3944/files/camera_capture_android_github.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9386/1279/files/ca_final_costing_paduka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/3902/3253/files/cfa_level_3_2020_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5849/3600/files/xorapodexov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/23582012054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/financial_year_end_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7098/0245/files/adverbs_of_degree_bungen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0303/4276/files/input_function_python.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_off00004d7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D7C 5192 bytes
SHA-256: 02c495c64ea5d312e3be418ceeb189c2fbb45e58cf085b9d053cd4d33e4d1cfd
font_01_sfnt_off00005f49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F49 10184 bytes
SHA-256: 95070bbef32ffd5ec6264821eb239e478195e5c30a9c648e4422a5e36ab62de1