Malicious PDF — malware analysis report

Static analysis result for SHA-256 962eeb22c87172c3…

MALICIOUS

PDF

71.7 KB Created: 2021-02-20 05:32:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 783d7cb8e0962be5156902561355f9d2 SHA-1: ba880f7045ba15aef5325d055902e9d92d18984e SHA-256: 962eeb22c87172c347104a795ad621da70a48882d885a9516c9071e4836d83e7
196 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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://jacksth.ru/wix?keyword=chloroplast+structure+and+function+worksheet PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4383132/normal_5fd086951a79b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381340/normal_600432505c7ce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459922/normal_5ff0228b80389.pdfIn PDF document text
    • https://vexakoloninabi.weebly.com/uploads/1/3/4/8/134851928/ganepagejodemumarip.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370267/normal_5fe0ee509ff76.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455901/normal_60087f85ecde7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381962/normal_60108f8dc4f9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374013/normal_6019335a0a190.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389793/normal_5fcacaf50d3fb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365624/normal_5fd08470f2e1a.pdfIn PDF document text
    • https://dupagerenukuxat.weebly.com/uploads/1/3/4/7/134751723/panovobowan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412173/normal_5fd9387d6671f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450336/normal_5ff92c40a6403.pdfIn PDF document text
    • https://zekorawuj.weebly.com/uploads/1/3/4/8/134862422/mofojowu.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/zagapaxa/gubbi_mele_brahmastra_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/kopisigapub/misotefa.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/zijeduj.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_off0000dcc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC2 5304 bytes
SHA-256: c6cb467b34c8ea362851f20a42046159e34d7875e029bb4efc1cdfefe1317072
font_01_sfnt_off0000eed0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEED0 10136 bytes
SHA-256: afe3a18a41247323403a590331eb5dc0d39b5af72e068ff7da866869522b0cf7

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