Malicious PDF — malware analysis report

Static analysis result for SHA-256 1efa22c323c94132…

MALICIOUS

PDF

119.9 KB Created: 2021-03-28 21:56:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60715de6eaf5e126e574540a2809e530 SHA-1: 749e986ae3e9534399e2199cb3336d7c55b5f54f SHA-256: 1efa22c323c941322007efa35e4ca80fddca427439694d306c653c11c0cc2f4a
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of external URIs and the document's deceptive nature point towards a phishing attack pattern.

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://zajinet.ru/award?keyword=interesting+stories+in+telugu+pdf
    • http://sagokorize.22web.org/acute_upper_gi_bleed_guidelines.pdf
    • http://gagejunifux.22web.org/79359135147.pdf
    • http://meetchat.space/which_of_the_following_is_an_example_of_corporate_social_responsibility73b18.pdf
    • http://rentline.pro/86732826076p7rt0.pdf
    • http://amaryllis.space/corpus_christi_offshore_weather_report0h9kz.pdf
    • http://juzajikadig.22web.org/bypass_survey_to_file_online.pdf
    • http://shopsupergood.site/chhota_bheem_movies_3gp4rwy3.pdf
    • http://rutefozur.22web.org/74679145629.pdf
    • http://kukushka.space/117216397102pqyp.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://711a90e7-97f2-4eab-8690-3003ec1e9b64.filesusr.com/ugd/a0905b_d56a234a775840f68a89e66a0f9f5cbe.pdf?index=true
    • https://s3.amazonaws.com/zufaxepixiguxax/hyundai_sonata_2011_service_manual.pdf
    • https://s3.amazonaws.com/lezerawe/ragekuwevev.pdf
    • http://nasalimutele.rf.gd/mevitipomirivotewaxotorus.pdf
    • http://firotiz.epizy.com/goodwill_donation_valuation_guide_2018.pdf
    • https://s3.amazonaws.com/poguvelefa/jeep_bed_plans.pdf
    • http://xetobagog.rf.gd/desierto_full_movie_in_tamil_free.pdf
    • https://s3.amazonaws.com/vatosolikijike/wagowowaxapebiwenuva.pdf
    • https://s3.amazonaws.com/bibejovixapis/android_17_x_reader_one_shots.pdf
    • https://c7bff75e-0a19-4817-9d47-fca4cf08161b.filesusr.com/ugd/3b6424_7205c8523cfa43b8b94cd479d569a2ed.pdf?index=true
    • http://vogasuzifen.rf.gd/1732632601.pdf
    • https://fb9345b8-40be-4608-a8ff-9c5427dba92f.filesusr.com/ugd/98d639_d76a5d77263b469d9b7724964a6b00a6.pdf?index=true
    • http://lojuwuwa.rf.gd/43619430902.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012454.bin
d2b91750910e94c4cdc16ff03a6cce22aa13d661ac48f69589bcdd029f6118f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12454 4936 bytes
font_01_sfnt_off0001352f.bin
12038957e36588f082c3dfd089129f153dab78aefb765a7094bccadf0dd2c9f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1352F 69260 bytes
font_02_sfnt_off0001af18.bin
dc4303863b76992c8292ded34e804af2cf508b3428c605147cb760056e64a528		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1AF18 9332 bytes

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