Malicious PDF — malware analysis report

Static analysis result for SHA-256 46081b56ad57159c…

MALICIOUS

PDF

43.6 KB Created: 2020-11-03 23:00:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 870238f644c0be77b29b463fa442addd SHA-1: 1e27ac80e8c3a3922ad74e81e1bb66d0b14b1926 SHA-256: 46081b56ad57159ce64fa6995852af6915466f9e1b4797cecd814253284c0ac8
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous embedded links, many of which point to a redirector URL known for malicious activity. The document body, though heavily obfuscated, contains the malicious URL and other links that appear to be part of a link farm designed to attract search engine traffic. The primary malicious URL identified is https://ttraff.com/123?keyword=sonic+adventure+2+ar+codes, which is likely used to deliver a secondary payload or redirect to a phishing page.

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.com/123?keyword=sonic+adventure+2+ar+codes In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374013/normal_5f8c37c54a1cd.pdfIn PDF document text
    • https://sepikupi.weebly.com/uploads/1/3/0/7/130738949/vejopimi.pdfIn PDF document text
    • https://dudabiwik.weebly.com/uploads/1/3/4/3/134354119/pesejimug.pdfIn PDF document text
    • https://worobewunit.weebly.com/uploads/1/3/1/4/131406731/aaf7ec.pdfIn PDF document text
    • https://dedotomonifagax.weebly.com/uploads/1/3/1/6/131606429/bagukazasavobewinute.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/98b43993-a96a-4758-ae08-a8a8ea9730aa/gentlemens_agreement_of_1907.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b9708d8-3500-4720-9675-d63be0cbf258/naacls_accredited_mls_program.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb84c006-4a33-4dd3-af7d-9f4506744d04/80645899146.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e3b486f-1d33-40f9-9d7e-869d4503818c/cans_test_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8aab383-3867-43c1-a19e-16eada519f6a/jiwosele.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57a4b6eb-aa11-415c-a688-331b1d5bfe2e/79419823211.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b870689d-8d3e-43f7-bd27-ac6b8611943f/kibalizixiwozumadi.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/kivobarefojen.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/a_behavioral_theory_of_the_firm_1963.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A2F 5196 bytes
SHA-256: e65d747f86bb1c963a504fe90e852952c537435609dd5d27cbf2b2eac035628d
font_01_sfnt_off00007bed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BED 11492 bytes
SHA-256: 6c36a4838160f587ccd1d0ce74d711fc8adb5e66d132dd107417964fb76e76a4

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