Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7d74bd18fe523ce…

MALICIOUS

PDF

80.6 KB Created: 2021-04-19 03:44:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 273cedbdf472a573dffcc7ba6417cb87 SHA-1: ae1837f3fe21793a447239f3f2bfed4cce5ad88e SHA-256: f7d74bd18fe523ce496c9ae881cf19bb47b3aab4743801a61b6e78cb3e573142
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that leads to a suspicious domain, likely intended to host a malicious payload or phishing page. The document body, though heavily obfuscated, suggests a search-related lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://leonvi.ru/strik?utm_term=words+that+start+in+lysol PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4422373/normal_605dd8892c8af.pdfIn PDF document text
    • https://cdn.sqhk.co/gixedomawa/gfriifi/gasizisikumolelimeji.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379603/normal_5fe83aa4bab6e.pdfIn PDF document text
    • http://magabof.22web.org/99219835694.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493553/normal_60468864696bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419425/normal_606bd41e9d382.pdfIn PDF document text
    • https://cdn.sqhk.co/xovikojux/jeEwDid/purosilinerifejew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462341/normal_603ff9c37a72c.pdfIn PDF document text
    • https://cdn.sqhk.co/gikunixa/d6ndibo/free_dj_sound_effects_reggae_air_horn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489733/normal_602700d3ee067.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388406/normal_5fe8021e038b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446260/normal_601d37810447f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418180/normal_605d9ee52dd0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379482/normal_5fdc2caeefaa1.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/wikurixobelu/is_comptia_network_worth_it.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/lugenagaparatom.pdfIn PDF document text
    • https://s3.amazonaws.com/paxuvagal/44196187709.pdfIn PDF document text
    • http://xusavax.epizy.com/types_of_bias_in_statistics.pdfIn PDF document text
    • http://retukazitoja.epizy.com/57245848001.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/65434614350.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/internal_audit_adalah.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/android_studio_3._4_features.pdfIn PDF document text
    • http://sobezoneroli.epizy.com/android_browser_that_blocks_autoplay.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/beled_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/powerpoint_website_wireframe_template.pdfIn PDF document text
    • http://lafasusatar.rf.gd/49776107680.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/tajepuroneluzodoxus.pdfIn PDF document text
    • https://s3.amazonaws.com/mufukep/there_holding_me_back_song.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_off0000fecd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFECD 5028 bytes
SHA-256: 63c59315be6a91e46810663e8a268a6161e1bd4fe752739843801188c400df35
font_01_sfnt_off00010fef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FEF 10736 bytes
SHA-256: dd4e8ee507aec228b3f1b14d006a2305ba79755d215aff471ddffb032691d35c

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