Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a2874bc05676394…

MALICIOUS

PDF

43.3 KB Created: 2020-11-01 01:12:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: d0cc9e29e31ed1d13a0e6ac41f68cda2 SHA-1: c66743595e78ae1079ac366000fd9269523e96d4 SHA-256: 2a2874bc05676394a7e144a8d33a206db90098db4b9c18304d5e9da347031b9d
154 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.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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=western+union+tracking+number+picture In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365583/normal_5f8b81fb427cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402247/normal_5f93d58381220.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366947/normal_5f87520cdf7d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403818/normal_5f9de296b6e79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391921/normal_5f93c7b835aa1.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006952.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006952.bin)
    • https://s3.amazonaws.com/defipedibe/musculos_de_la_masticacion.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/31108178147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8714/2295/files/magic_school_bus_gets_energized_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/captain_america_online_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fakuguvil/23258175437.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/what_is_a_contemporary_math_class.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c26c2ed9-f3e9-472b-9678-daf17df37859/exercices_corrigs_structure_des_molcules_1ere_s.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4334/3512/files/39419651853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8702/0703/files/jazz_guitar_scales_tab.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/canada_states_list.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_off00006952.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006952.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6952 5436 bytes
SHA-256: b09e8c6dd9ec1177899b89259a10a0e020a7704b243db9a8b5d8a3220e64fe2c
font_01_sfnt_off00007bce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BCE 10804 bytes
SHA-256: d64ad5aac9a57dc1dddb10cdb3ee2e2341cb9fea5970937e5310f39ee2569303