Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0eb64bc4746b85b…

MALICIOUS

PDF

76.3 KB Created: 2021-04-26 08:47:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb740bc27928ea9789b2a6112473c4ba SHA-1: bbd9d9e06201c2a8be9ce50be99e36a011bf2912 SHA-256: e0eb64bc4746b85ba2e3a5b5e906c4b67423913568c1c4b298e0338182612c9e
96 Risk Score

Malware Insights

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

The sample is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an external URI pointing to 'pelibifir.ru', which is likely a phishing or malware distribution domain. The document body, though heavily obfuscated, suggests a lure related to '40 yard dash time'. No scripts were extracted, but the PDF structure and heuristics indicate malicious intent, likely related to spearphishing.

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://pelibifir.ru/strik?utm_term=what+is+a+good+40+yard+dash+time+by+age
    • https://cdn.sqhk.co/bujugasefoli/7RUQhcV/8029296087.pdf
    • https://cdn.sqhk.co/noneniwetav/jbcgcjb/setan.pdf
    • https://cdn.sqhk.co/xinovupu/ih4ii7R/css_stylesheet_classes.pdf
    • https://cdn.sqhk.co/sogefuluf/iid0fjd/this_war_of_mine_ps4_dlc.pdf
    • https://cdn.sqhk.co/mekurapiw/DWbhigE/wings_retro_1.pdf
    • https://cdn.sqhk.co/videbamez/ynicihX/swot_analysis_template_filetype_doc.pdf
    • http://rarojujelalonu.iblogger.org/92437544657.pdf
    • https://cdn.sqhk.co/bebomopakax/nifhjhc/13267789349.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d3165628-d782-4bcf-89c5-9d4c5341fbf0/new_sales_simplified_chapter_summary.pdf
    • https://s3.amazonaws.com/mutirexa/us_army_ranger_training_pipeline.pdf
    • https://uploads.strikinglycdn.com/files/713df266-cff8-4df3-bc38-cdcc5f80b099/sodastream_refill_price_target.pdf
    • http://sokevojufepizi.rf.gd/apex_legends_pc_unblocked.pdf
    • https://s3.amazonaws.com/titugome/neato_d5_brush_not_spinning.pdf
    • http://palomidifigur.epizy.com/absorbent_mind_maria_montessori.pdf
    • https://uploads.strikinglycdn.com/files/4761559f-35c1-4c7e-ac2d-298d81fdb697/ill_be_gone_in_the_dark_hbo.pdf
    • https://uploads.strikinglycdn.com/files/75e0f82a-4cdc-4532-95a7-981a7edaeeab/ka-bar_us_marine_corps_survival_knife.pdf
    • https://s3.amazonaws.com/nijudow/beautiful_sunday_daniel_boone.pdf
    • https://uploads.strikinglycdn.com/files/3e793291-7554-46ad-94fc-8f866b9347ed/56710847033.pdf
    • https://uploads.strikinglycdn.com/files/b4abfbe4-0db0-41f4-a77e-feab39b702b9/projective_geometry_in_art.pdf
    • https://uploads.strikinglycdn.com/files/bdd2d5a5-a74c-4dfb-9be2-34e739ad6031/how_to_get_good_champions_in_marvel_contest_of_champions.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_off0000e839.bin
8b7d13be467979ed889c060abc68dbfd336159c38781972948a0bac14fe881df		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE839 5692 bytes
font_01_sfnt_off0000fb7a.bin
50c66a98d1453b6f2cbffadbd9e0ee4ada79990a3ab349ff9838c88a0ab542ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB7A 11224 bytes

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