Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e5905f80de4a5ba…

MALICIOUS

PDF

77.8 KB Created: 2021-03-25 09:50:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1878471fa51a5d916c5e76fe2de840f2 SHA-1: e630b10c8f9866f8694ed321fc97da5a7422563b SHA-256: 3e5905f80de4a5ba2131a80c75eb092ed993e486712df2b766f187e9cd429977
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to game guides, which is a common tactic for phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://gimoguvi.ru/wix?keyword=aura+kingdom+eidolon+chronicles+guide
    • http://vonoxafaku.scienceontheweb.net/bookstore_computer_systems.pdf
    • http://xikisavi.scienceontheweb.net/jikibiket.pdf
    • http://falorilipeb.mywebcommunity.org/statistical_modeling_book.pdf
    • http://woziwowariv.sportsontheweb.net/71232778346.pdf
    • http://zoguponuwuxoli.medianewsonline.com/44246202384.pdf
    • http://mozobadijoba.medianewsonline.com/bojomukogev.pdf
    • http://gemajesubon.22web.org/mla_8_annotated_bibliography_format.pdf
    • http://miwodenexiz.iblogger.org/finding_dory_movie_in_tamil_hd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://13fad4bf-7224-44b3-802b-16842e97d241.filesusr.com/ugd/b14664_9900e7895fd547c6bf40363e89ed437c.pdf?index=true
    • https://s3.amazonaws.com/suxugipipolazog/betuwipapar.pdf
    • https://s3.amazonaws.com/wewiro/xofejokefego.pdf
    • http://topunofiw.epizy.com/constitucion_politica_de_los_estados_unidos_mexicanos_1917_articulo_123.pdf
    • https://s3.amazonaws.com/kodipopujufipig/ffxiv_desynth_guide_armorer.pdf
    • https://f45985d3-969e-4a4b-a16b-f92b7c881388.filesusr.com/ugd/20da2d_492e86063e6844ed8148e950e8d220d2.pdf?index=true
    • https://d73c234d-0e3d-497d-8108-d5659bace061.filesusr.com/ugd/58a813_2d7823e493d9417f872c60199cfec9ad.pdf?index=true
    • http://gexilel.rf.gd/dexawaxowebegaxifuwetise.pdf
    • http://dozopedatofol.atwebpages.com/52705730763.pdf
    • http://pexoroxijaseduj.rf.gd/what_is_industrial_systems_engineering.pdf
    • http://vidoniwofunevan.onlinewebshop.net/84789097271.pdf
    • http://wagupamodesugub.rf.gd/wekogodupemowagureruvule.pdf
    • https://15e12281-0fef-4bb1-b284-2b61ddec1698.filesusr.com/ugd/6c5390_c3779e16421a4f098bec1843c4c86981.pdf?index=true
    • http://sisawujeza.rf.gd/22167797714.pdf
    • http://pibufesoxol.epizy.com/true_rms_multimeter_fluke_179_manual.pdf
    • http://tuzotulerijenej.rf.gd/history_of_african_novel.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f35d.bin
0f7cdf33b2a5dc70a6635d725d92239e39d333a4aa90d7fd5d2a54f3e23e61f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF35D 5408 bytes
font_01_sfnt_off00010592.bin
369f7a1a37356dc6fb51dbf7db026066f42a6cf75c84b9c5de3fbada50be81fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10592 10404 bytes

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