Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaa35f605a038f13…

MALICIOUS

PDF

68.2 KB Created: 2021-02-18 09:57:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: dc4516408a72d211c0770f3f6ec79580 SHA-1: 851aee9ab00d4b64ca5490f6fac238dbc723d0af SHA-256: aaa35f605a038f13a662d8de52ed23bbfa6038b19b92dff4b31a8a8b5831a067
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://baarspo.ru/wix?keyword=cosmic+pvp+enchant+server PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4412164/normal_6008c1a5bd963.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385213/normal_60173465a7e63.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500438/normal_5fd164ec17bd6.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/dadupawo/vizabubiwawak.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/thug_life_apk_free.pdfIn PDF document text
    • http://witopovuketoj.epizy.com/petiputedam.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/vukidafak.pdfIn PDF document text
    • http://rodobokojezaga.epizy.com/77697222105.pdfIn PDF document text
    • http://zikinevubebera.epizy.com/refudifuxopugusasasilawab.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxalirudidel/59975725992.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/3d_models_for_maya.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/informix_4gl_training.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/fizewuwurulolazejig.pdfIn PDF document text
    • http://lavodusepigixu.rf.gd/cambridge_primary_school_east_london_application_forms.pdfIn PDF document text
    • http://ladesefutajon.rf.gd/sukeluranunipugikatofewu.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/marksheet_verification_application.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/74045301889.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_off0000ce4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE4C 5104 bytes
SHA-256: 59a65fc6db203dbb67d477b57b26e8d8316552719b6909e75e133c5f4d9249a3
font_01_sfnt_off0000df82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF82 10680 bytes
SHA-256: a8c291b1d4a6a49534809517a4fd98e533a15845512f4cf8b8813b15d4499ccb