Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d222aea78f20ed1…

MALICIOUS

PDF

78.4 KB Created: 2021-02-27 07:45:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 368f97c2342cc50ec85fe571d90b774a SHA-1: 5ab4278f29fc33ab9f2cd3051965cf1a3b493c07 SHA-256: 7d222aea78f20ed11287e5ebf05987c249582b78a3f41ba0813c757640e99c1d
144 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a lure related to servicing a boiler, directing the user to a suspicious URL. This URL is identified as an SEO redirector, likely leading to a phishing page. The ML classifier and ClamAV detection strongly indicate malicious intent, consistent with a phishing attack.

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
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://fokemale.ru/123?utm_term=how+to+service+a+baxi+boiler PDF link annotation
    • http://siwivelijutore.medianewsonline.com/46311543345.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499005/normal_5fd816ee5e727.pdfIn PDF document text
    • https://cdn.sqhk.co/fegibidizog/FiiSRPE/amaze_restaurant_menu.pdfIn PDF document text
    • http://boforotaje.mywebcommunity.org/mafudolexifediwuvug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471692/normal_5fe7c5ac06ff7.pdfIn PDF document text
    • http://bajifepeselok.sportsontheweb.net/gafekanutugesag.pdfIn PDF document text
    • https://cdn.sqhk.co/nadipozow/hhdjbyc/abalone_jewelry_box.pdfIn PDF document text
    • http://kesuvajeb.scienceontheweb.net/jokeverabudujasinoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484103/normal_6039b959af457.pdfIn PDF document text
    • http://zokidinodajives.getenjoyment.net/kojaripugetifijub.pdfIn PDF document text
    • http://tideparipawovu.mygamesonline.org/kusakadebowasit.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/wovisak/90939003092.pdfIn PDF document text
    • https://s3.amazonaws.com/fakuguvil/84874083837.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/69381340739.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/72373624839.pdfIn PDF document text
    • http://vujuvisesakok.myartsonline.com/fulizorokekiwefu.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 5

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_off0000f628.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF628 5112 bytes
SHA-256: 69efe370dd4245e56fb27e2515d6bad541b3953d041456e574170c4ba968845f
font_01_sfnt_off000107b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107B5 10916 bytes
SHA-256: 5213ba1ad7fe0a8f544eeacb7a4653a47350862053705dda41282e7cd7756246

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