Malicious PDF — malware analysis report

Static analysis result for SHA-256 938744f3071c5779…

MALICIOUS

PDF

72.9 KB Created: 2021-03-01 16:59:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9449a10a4ffcb14fa6589f0b36f29bbe SHA-1: b17c92d975faa79f6ae8b73d022ace27dedc2d76 SHA-256: 938744f3071c5779216c1cfb4a87e620a351d9cdee180674333ada9b3e01e58b
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/wix?keyword=secant+and+tangent+angles+worksheet+answers PDF link annotation
    • http://emmetrix.net/biblia_de_liderazgo_john_maxwell_gratisfoqcp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465704/normal_5fcebd6bc8771.pdfIn PDF document text
    • https://kikezisukoka.weebly.com/uploads/1/3/5/4/135400991/e8ee9.pdfIn PDF document text
    • http://wemokeledezo.iblogger.org/is_add_worth_it.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405687/normal_603b006fda446.pdfIn PDF document text
    • http://tizezs.xyz/throne_of_glass_series_book_orderdmfoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450514/normal_60304c0c08eaf.pdfIn PDF document text
    • http://5-euro.info/52586998785kc9la.pdfIn PDF document text
    • http://towumodoxilokox.22web.org/protein_synthesis_worksheet_answers_part_b.pdfIn PDF document text
    • http://missunik.space/97094663653j83er.pdfIn PDF document text
    • http://kifikawi.66ghz.com/mp4_audio_songs_free_tamil.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/xokebore/95755300327.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/kafeziratuxese.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/savinejilovafuf.pdfIn PDF document text
    • http://leporib.epizy.com/aisha_songs_mr_jatt.pdfIn PDF document text
    • http://zifasodokid.epizy.com/3343876738.pdfIn PDF document text
    • http://lapobikajedive.rf.gd/mississippi_professional_drivers_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/espresso_english.pdfIn PDF document text
    • https://s3.amazonaws.com/tisegovofu/kegalol.pdfIn PDF document text
    • http://kovovurimona.epizy.com/my_magnavox_tv_wont_power_on.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_off0000dddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDDB 5460 bytes
SHA-256: 78c68897c35fe48befae7949c7b81d33db9cd99ebca6d6011a681dee86d6c116
font_01_sfnt_off0000f078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF078 10988 bytes
SHA-256: c12991e792e9ca5550b9715d38acbbf2fbe2212f84195e3cbc39ae848851e13c

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