Malicious PDF — malware analysis report

Static analysis result for SHA-256 68ce4d0f2e6884eb…

MALICIOUS

PDF

41.9 KB Created: 2020-08-26 06:16:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 6bca516be5eab04e915ffcd4b200f57f SHA-1: 90ca8a66e15f179966da67ab3efb73cb36a13f13 SHA-256: 68ce4d0f2e6884ebf6e7084102244143dc58a1f485b12e93c5cb1d7697759d9e
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.club/pify?keyword=balanced+or+unbalanced+chemical+equations+worksheet+pdf In PDF document text
    • http://files.kaijubattle.net/uploads/1/3/0/7/130776037/gotirufigutek-raxadifapumuwek.pdfIn PDF document text
    • http://files.leedsdeckingandfencing.com/uploads/1/3/0/7/130739315/furabuwejeg.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/1/0433/5019/6392/files/51452506951.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7229/8918/files/wekelefowuxosufubabapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9043/5495/files/cerita_anak_islami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2784/7576/files/problem_solving_strategies_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9557/2126/files/identidades_hiperbolicas_demostracion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/6059/7660/files/33932967601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9069/6597/files/beselutuginafoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/38083932320.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/gezunadufupexavatomaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3974/2359/files/kenosuzenavaguvatugefowoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6688/4250/files/design_of_reinforced_concrete_9th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3287/1074/files/gosevi.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
🗂 Part of campaign: leafingthroughbooksandtea.com 3 samples

Related samples 1

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_off000062e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E9 5868 bytes
SHA-256: 8d5096ad069c00b406956564e6daad8f42b22b5039b52c12e79d8fe39d68909a
font_01_sfnt_off000076b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76B4 9840 bytes
SHA-256: 762a92bdee83116c1440ca5b666154fbb5ff0394fb596e33550a254ab39dcb26

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