Malicious PDF — malware analysis report

Static analysis result for SHA-256 e077e9876f7936b9…

MALICIOUS

PDF

68.8 KB Created: 2021-01-19 10:44:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5481b0d4ee837396e5d9c4f43bca6eeb SHA-1: 8bb4255d181b91bf9c83175d395ba91d51b29c3b SHA-256: e077e9876f7936b9c1416461ff533f84bdd8cc66c811101dde1ebb2064348a3d
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://jottigo.ru/aws?utm_term=instagram+followers+app+ios PDF link annotation
    • https://wesotapaxo.weebly.com/uploads/1/3/4/4/134488604/geroriwet-kusetoxewapub-torafum.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/bewoti.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375087/normal_5fff39239daa7.pdfIn PDF document text
    • https://mutolumikiwow.weebly.com/uploads/1/3/1/8/131872082/bavid-togexirovitotax-wakipuru.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371244/normal_5fed43208a19d.pdfIn PDF document text
    • https://cdn.sqhk.co/jorimalid/yggH1nI/wujikobujabajuvujop.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392667/normal_5fefa9154bfd9.pdfIn PDF document text
    • https://rewovokikulige.weebly.com/uploads/1/3/1/3/131379935/3733490.pdfIn PDF document text
    • https://site-1178160.mozfiles.com/files/1178160/jinasepuzekifavirugep.pdfIn PDF document text
    • https://kukiramofup.weebly.com/uploads/1/3/1/4/131413837/vapozikureguzur.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418558/normal_5fe50d33e32c8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492250/normal_5fc5723bd1502.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471099/normal_5ff3ae534553a.pdfIn PDF document text
    • https://wipezupogev.weebly.com/uploads/1/3/4/3/134307181/6997048.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466153/normal_5fadcfe206ae0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d13a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD13A 5248 bytes
SHA-256: 4e1480f2f6ad8f367a9e4f3fdea6fd8b835756026a0e5563754d8703e692ab92
font_01_sfnt_off0000e316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE316 10444 bytes
SHA-256: 4640001fa35e20f0a5f75f11eac459dbea9f80f1075599bea5406c7eac52f922

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