Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd9adb2de5688446…

MALICIOUS

PDF

45.1 KB Created: 2020-10-03 19:49:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: d194725fc8395cc414c0f267241aa70f SHA-1: d22ad05a6ff01847c89640239ef066732194a181 SHA-256: cd9adb2de5688446de2635375c80cae6b5ded48f8130d191a042a5a93de84dcb
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://ggtraff.ru/strik?keyword=o+pequeno+principe+filme+completo+dublado In PDF document text
    • http://jabup.unboundumd.com/uploads/1/3/2/8/132816066/nuturo.pdfIn PDF document text
    • http://files.mainstreetkidsclub.com/uploads/1/3/1/4/131482946/zetixeb-miwatuwuw.pdfIn PDF document text
    • http://ruripewo.jaxaerospace.com/uploads/1/3/0/7/130776661/9420350.pdfIn PDF document text
    • https://site-1037124.mozfiles.com/files/1037124/47472834579.pdfIn PDF document text
    • https://site-1037846.mozfiles.com/files/1037846/gezojuxupenojikedopanopok.pdfIn PDF document text
    • https://site-1036696.mozfiles.com/files/1036696/lefazajoremulelirivabol.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a937a5fc-0b80-4693-b063-18db1456a764/66404452616.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c201a1d-f229-448e-b928-9d8450ad7f66/kitasimawevevixodoxujuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dd9d355-082e-4198-9b75-115f5b9faaa0/jajej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6020/8540/files/family_tree_maker_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0470/9538/2174/files/radomobovororabori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2168/1315/files/xekilokuvosijimaxer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8326/2869/files/el_camino_college_transfer_counseling_appointment.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_off00006c64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C64 5416 bytes
SHA-256: 3e0f78f188aa02235dd5f74b37aa20d7dad350244149d64972d7119f34a39df0
font_01_sfnt_off00007eb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB1 12920 bytes
SHA-256: 60951ab361a3e0ba066ad7a5529de0a4478677d32ddfc6148468f4c128b6b128

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