Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2c409ba948ff0de…

MALICIOUS

PDF

44.1 KB Created: 2020-10-04 21:55:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 12481c9e754fa516a125f47db5f7533e SHA-1: 92685d766516478e3c0fc2f9a5b33abf2641355f SHA-256: b2c409ba948ff0de88a58c0fe0c362864f65a130ea81192e7d42a1f919ef1d62
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/pify?keyword=formal+and+informal+assessment+in+counseling In PDF document text
    • http://nitevid.ceciliemusic.com/uploads/1/3/1/4/131407312/b184413.pdfIn PDF document text
    • http://files.brianconnersbcba.com/uploads/1/3/0/7/130739510/40337cd3f49b11.pdfIn PDF document text
    • http://miroj.peintedllc.com/uploads/1/3/0/8/130874364/bekamukimanapes.pdfIn PDF document text
    • http://files.bellabirth.org/uploads/1/3/1/4/131438860/jonekuluke_wazipuzudira.pdfIn PDF document text
    • http://files.messiahlutheransc.com/uploads/1/3/2/7/132710575/kanavasoboliw.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/1/0437/0055/1845/files/wutidumigivilexikub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8975/6311/files/98512066482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4564/9574/files/82295258529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1624/9767/files/geometry_dash_invincibility_hack_apk_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9240/1558/files/genre_musik_pierce_the_veil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cf43ab5-dc31-4383-a314-54b0cc5d2d73/pinego.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3c66786-65ca-4826-819e-35c952726dce/gizatewisiwubirizolituzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8696/1045/files/ranger_apprentice_book_2_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7547/2033/files/principios_generales_de_la_carta_sobre_la_tierra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5119/6314/files/xotidopaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2154/9217/files/vawumusidiromage.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 3

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_off00006d7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D7C 5296 bytes
SHA-256: 68976a9d5e542eebe2e75088067f5520f4615f55fa6f970fb16bfaeccfa130e7
font_01_sfnt_off00007f67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F67 10452 bytes
SHA-256: 303ef735ef15ae9714735206850b70b92e6a11a7fb9e35783fd6883e8eae002b

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