Malicious PDF — malware analysis report

Static analysis result for SHA-256 4402a02d33ff60ed…

MALICIOUS

PDF

43.7 KB Created: 2020-10-30 06:14:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 3467b2cc6e1407e6df8861f92b993820 SHA-1: 649ea093ef337824e3b33759f6aa62effe83702d SHA-256: 4402a02d33ff60ed8db545a019739bfb8e19c58ebb6459af7fdd460f0a15694d
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=simcity+4+mods In PDF document text
    • https://cdn-cms.f-static.net/uploads/4416128/normal_5f970b5c38a50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365635/normal_5f8b1ca59c901.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383928/normal_5f8f1eb3c7c60.pdfIn PDF document text
    • https://mezuminekafowiw.weebly.com/uploads/1/3/4/3/134346911/030f01a06b379.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365653/normal_5f893b2ea501c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367632/normal_5f8e1ff22784b.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/1/0431/7125/0333/files/8607_solved_assignment_teaching_practice.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/amazing_tales_rpg_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/37309013108.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/60446402301.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/adverbs_of_manner_rules.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82736622-9bf2-4f69-bb4c-f01898bafdbc/vidanenesirofidege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5758/5569/files/play_store_descargar_para_android.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/10831745505.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/480669bb-753f-4a25-af7e-c17fcf354649/37453926976.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/742bbfb4-a18f-4881-a883-82c5929fa296/santana_smooth_song_download.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_off00006a98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A98 5040 bytes
SHA-256: 20d1ff39fde6f39b9e931c6700f6bae357e867a35212cecbba4b2998c609f037
font_01_sfnt_off00007bc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC4 11468 bytes
SHA-256: d48a5e875dacdd1c4d13a4390cba40d33a5b4528933cba472d2f66a210461285

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