Malicious PDF — malware analysis report

Static analysis result for SHA-256 c378e47aa4ea48d4…

MALICIOUS

PDF

68.9 KB Created: 2021-01-14 11:40:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: ce39e5e084a4f8719812006fb0e51670 SHA-1: fddcd43b2860d08ac7bd4b1474861d77ba41df10 SHA-256: c378e47aa4ea48d41f2e9eb607d7038d8e4bb7a09f555d57160953ecfe5f197a
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffine.ru/aws?utm_term=sequences+nth+term+worksheet In PDF document text
    • https://teguzefememefa.weebly.com/uploads/1/3/4/6/134609716/5872109.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/a8401ec7a9859.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372983/normal_5fdddf3b87b27.pdfIn PDF document text
    • https://xomisugasaze.weebly.com/uploads/1/3/4/6/134680352/6138807.pdfIn PDF document text
    • https://cdn.sqhk.co/dejuxafe/VhdhbvF/mario_party_music_roblox_id.pdfIn PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/fuzidex.pdfIn PDF document text
    • https://tiwidugeges.weebly.com/uploads/1/3/4/6/134635585/ronixi-komegizemi.pdfIn PDF document text
    • https://lezogije.weebly.com/uploads/1/3/1/8/131858481/6392942.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411218/normal_5feeb4bd6f41e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387232/normal_5fa887446435a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402964/normal_5f9c9fe04d223.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bugutaj/abcd_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/nekixapirajubewi.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/zuxenelemuronowoduzisusod.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/who_wore_platform_shoes_with_goldfish.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_off0000d016.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD016 5184 bytes
SHA-256: c100dab491dc0e510a31898a34de5ee065525caa251ec722af81d25177ed758b
font_01_sfnt_off0000e1a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A9 10896 bytes
SHA-256: 3b3b439472d4b6aeb705f7b0a74fbc5a98793ae860009a605d5ea8c17d0f9304

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