Malicious PDF — malware analysis report

Static analysis result for SHA-256 108e514a59bfda08…

MALICIOUS

PDF

40.8 KB Created: 2020-10-31 09:05:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: fb8073b4837e19800c573b4d7fabe184 SHA-1: 9b5548c5fbef92b1064947d48f9e9b00fe09bbcb SHA-256: 108e514a59bfda085667a07d929f0a864ab0040e0b0019ff1c1aaace17caa3fe
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/123?keyword=ceramic+light+socket In PDF document text
    • https://pavowojavujide.weebly.com/uploads/1/3/1/3/131398322/gagoruniwoxijo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7277/4849/files/65487186982.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f61d1d60-6b8b-4b75-a7b3-828f3c374040/introduction_to_linear_regression_analysis_5th_edition_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fac78d93-9a88-4a4a-808f-7691617600ed/organizational_communication_approaches_and_processes_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8186/8462/files/fenner_taper_lock_pulley_catalogue.pdfIn PDF document text
    • https://s3.amazonaws.com/wumodukubaru/dos_almas_gemelas_libro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9828/3427/files/robozij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7326a97-3b56-41a0-8412-392cb50f8e4f/47523811810.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/aspergillosis_in_animals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/6914/3708/files/13262693963.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/wolemuwetuwidedosurolibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1579/8421/files/ikea_minde_mirror.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0496/3234/files/vewuvidedib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5a4385c-babe-4b9d-bd17-daa87d54d165/62279816605.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7652/7014/files/11416296383.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005383.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5383 4984 bytes
SHA-256: 1beb702cc8754fab5a5eabb1dd54cd9664055fc431311ac1e00e059f5458391d
font_01_sfnt_off00006472.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6472 10664 bytes
SHA-256: 635f23a2b3a5bc65dc8eaa6e795f6e94c4dfa8ef73665eb3a442b37ae1b6381d
font_02_sfnt_off00008898.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8898 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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