Malicious PDF — malware analysis report

Static analysis result for SHA-256 2474e71ae3b63608…

MALICIOUS

PDF

88.8 KB Created: 2021-03-01 05:22:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 3b669f781e31f3f61f727bbbb438b192 SHA-1: cb2c060f0ada5e773854a485d2b42ee001ff1c05 SHA-256: 2474e71ae3b63608a67f1ca63ff66028463fb5591ee35e416db6f530f4afb981
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware-hosting site. The PDF structure and embedded content suggest it is designed to appear as a normal document while attempting to exploit vulnerabilities or trick the user into visiting a malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xajibur.ru/aws?utm_term=what+is+forged+in+fire+have+a+new+host PDF link annotation
    • http://tiktokcopyrighthelpteam.com/kavuganufx7vph.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464851/normal_600280207b62e.pdfIn PDF document text
    • http://tihefers.online/menefuruwesexepsg5e0.pdfIn PDF document text
    • http://greatmasters.biz/62917216314oq68j.pdfIn PDF document text
    • http://tehnotop.store/femepokunoladokagojorumi8cdw3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408481/normal_5ffdf9c8b817e.pdfIn PDF document text
    • http://nerroba.info/netflix_para_android_marshmallowsqbru.pdfIn PDF document text
    • http://raicen.com/periodic_table_trends_worksheet_answer_keyg74kb.pdfIn PDF document text
    • http://lunesygets.xyz/what_is_the_main_purpose_of_the_invisible_primarysjnfo.pdfIn PDF document text
    • https://cdn.sqhk.co/razupojoja/gh5iiu8/withings_steel_hr_sport_hybrid_smartwatch.pdfIn PDF document text
    • https://cdn.sqhk.co/daborofus/aha4ie0/kiwunelalerepoxute.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423430/normal_5fd1df8dab29e.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/falevi/pupeziniw.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/53961590801.pdfIn PDF document text
    • https://s3.amazonaws.com/zulezov/conjunctions_practice_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/1242734436.pdfIn PDF document text
    • https://s3.amazonaws.com/tubupejevomo/27458592488.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00010d54.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x10D54 11868 bytes
SHA-256: e7f6b4fb715a7bd7946d24f744a23c3f37c255c10d52bae39dc1789ca55b617b
font_00_sfnt_off0000fb41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB41 5300 bytes
SHA-256: e0af7c3a298bb6c46cfe04fb99110db5f4db27d6409fc8a634a2d9a1bd507f90
font_02_sfnt_off00012f18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F18 11300 bytes
SHA-256: 84313cbf036e69db57356ba77f1933483ce379d36fbe0eada106e74d30386337

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