Malicious PDF — malware analysis report

Static analysis result for SHA-256 93d0b74c4f5be644…

MALICIOUS

PDF

41.6 KB Created: 2020-10-08 02:26:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 871f9a1e6a5c04eac945a83495603448 SHA-1: 5e0cd4ae095c7667b1ec1cd928a7db2b89475a33 SHA-256: 93d0b74c4f5be644f7b9114dd20131c3b4ae9bd4b0e7f40eeb04c3b376ba3e5a
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=reproductive+vocabulary+challenge+worksheet+answers In PDF document text
    • https://site-1041285.mozfiles.com/files/1041285/69756624439.pdfIn PDF document text
    • https://site-1040213.mozfiles.com/files/1040213/39268006207.pdfIn PDF document text
    • https://site-1036661.mozfiles.com/files/1036661/48071923738.pdfIn PDF document text
    • https://site-1037029.mozfiles.com/files/1037029/23931534093.pdfIn PDF document text
    • https://site-1039888.mozfiles.com/files/1039888/30203298921.pdfIn PDF document text
    • http://piredera.murphyband.com/uploads/1/3/0/9/130969937/gawes-kigigaluguj-fifuwox.pdfIn PDF document text
    • http://tuxuv.opmetoc.com/uploads/1/3/1/8/131871479/3456974.pdfIn PDF document text
    • http://files.rosecitypepperheads.com/uploads/1/3/2/6/132683330/0bee86f0472c29.pdfIn PDF document text
    • http://files.aplusephoto.com/uploads/1/3/0/8/130874205/a22f6a.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/1/0486/6742/6966/files/dies_the_fire_series_order.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8894/4545/files/qsen_patient_centered_care_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8595/4208/files/universal_gate_clicker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/4906/6911/files/56059024243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5214/5560/files/mojarebodopemabiwepetamu.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_off00006310.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6310 5800 bytes
SHA-256: ac1e72d877019b16d4d9673b11d047d90249a742b7f3f40609c2a6294fc4f383
font_01_sfnt_off000076e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76E3 10108 bytes
SHA-256: 95cb7c554abd041b198ac69521debab43126e600dc4596e92c88a4c0822fb633

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