Malicious PDF — malware analysis report

Static analysis result for SHA-256 00b7e782b46a0a75…

MALICIOUS

PDF

67.2 KB Created: 2021-02-15 07:46:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: fb31bae0e05d55e57068c0e871daf574 SHA-1: b4c12349b982aa78a194e0129ceb4841eb8b7f9b SHA-256: 00b7e782b46a0a75b8e658a60b320562bdeba731a498e7429c3161b6350bc1a9
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://druttle.ru/wix?keyword=composition+of+functions+worksheet+answers+f%2528g%2528x%2529%2529 PDF link annotation
    • https://nuzunovi.weebly.com/uploads/1/3/5/3/135314570/nonurojow_takep_jipimamadix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365555/normal_6019c52db9d07.pdfIn PDF document text
    • https://vesanawe.weebly.com/uploads/1/3/4/6/134602832/2927388.pdfIn PDF document text
    • https://dopakegufa.weebly.com/uploads/1/3/1/3/131384718/fawolara.pdfIn PDF document text
    • https://sojenumodab.weebly.com/uploads/1/3/5/2/135296615/4970607.pdfIn PDF document text
    • https://xuvakaxatal.weebly.com/uploads/1/3/1/0/131070170/1181033.pdfIn PDF document text
    • http://gedawuxofawu.iblogger.org/cdc_flu_vaccine_guidelines_pediatrics.pdfIn PDF document text
    • https://bezofaxifi.weebly.com/uploads/1/3/1/6/131606652/2459041.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/midaguvimabof/6025485907.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/danoxuloxolaw.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/jidujamijefur.pdfIn PDF document text
    • http://poxipepeti.epizy.com/megalovania_undertale_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/esmo_ovarian_cancer_guideline.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/83272030330.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/62109605939.pdfIn PDF document text
    • https://s3.amazonaws.com/subopukomanaw/bewepijagugowe.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/tufidebegulalitiposewuf.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9C3 5680 bytes
SHA-256: bd0f2bad3b9b167e9c877a19e2eb84334e1bb62e8ccb21dcace029a586273faa
font_01_sfnt_off0000dd20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD20 10032 bytes
SHA-256: 95138854b7e08ddad17cbe4a88635e0de34cd5bf5ccae6220988ca24b44dedad

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