Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d0f2bfc01e9ae48…

MALICIOUS

PDF

41.8 KB Created: 2020-10-30 07:24:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: c6bf69816c355ce023837a3244067ec2 SHA-1: a7e5beee36c112d569d48a49da6e85d67e097fbd SHA-256: 6d0f2bfc01e9ae486b3574a5884685e849d884da6e2bcb4c2fff91928b0edfa7
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.cc/123?keyword=127+mm+into+inches In PDF document text
    • https://cdn-cms.f-static.net/uploads/4378381/normal_5f97bd59a54a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387240/normal_5f9120e5dcd58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373997/normal_5f8bdb126d7c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376856/normal_5f8b39a92dd0d.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/1/0481/7590/6973/files/beer_for_my_horses_lyrics_and_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/4182/3164/files/plants_vs_zombies_unblocked_games_77.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/2973/9704/files/manual_gating_flow_cytometry.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/botavifozodikej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/8268/9941/files/88297319358.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/54184959098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/5103/2991/files/numbers_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/innovation_defined.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_off000066c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66C0 4872 bytes
SHA-256: 293d51dbf70fce7017bce515aad31e18acb2b8d6c4a228a53ad3f44daeb328cd
font_01_sfnt_off0000773f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x773F 10568 bytes
SHA-256: 1de4510a40ee04fbe5624d39ae4de8a05384408e65d55fa1a692e05ba7fb5df0