Malicious PDF — malware analysis report

Static analysis result for SHA-256 44eb2f522decaf43…

MALICIOUS

PDF

245.5 KB Created: 2021-03-31 23:56:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 3acc7dac6a6500c4bd2096d9c927f1cc SHA-1: ccff6bf79dd633d2c03ad7cfab91bb1ceb2197c9 SHA-256: 44eb2f522decaf43f2ef5e88549401b165dd657aa73c3b2dcc2284294153d83c
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 high likelihood of malicious intent. It contains an embedded URI pointing to 'seumenha.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, contains text that appears to be a lure related to the movie 'Shawshank Redemption'. No scripts were extracted, but the presence of external URLs and the ML/ClamAV detections strongly suggest a malicious purpose, likely related to phishing or delivering a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://seumenha.ru/wix?keyword=shawshank+redemption+get+busy+living+monologue PDF link annotation
    • http://dwatches.site/24987745251p5n6k.pdfIn PDF document text
    • http://tinipen.medianewsonline.com/action_research_examples_in_classroom.pdfIn PDF document text
    • https://cdn.sqhk.co/zarepowake/jcr26ib/kulilituduwito.pdfIn PDF document text
    • https://faraxebeg.weebly.com/uploads/1/3/4/4/134475962/b3aa2d0.pdfIn PDF document text
    • https://cdn.sqhk.co/maputaliki/jhhinzc/google_authenticator_key_manual_entry.pdfIn PDF document text
    • https://delazodudiz.weebly.com/uploads/1/3/4/5/134591817/9157034.pdfIn PDF document text
    • https://lekipavovat.weebly.com/uploads/1/3/4/3/134332936/desubov-xenoxadumivit.pdfIn PDF document text
    • http://wemuwetafivaxe.sportsontheweb.net/shadowrun_20th_anniversary_adventure.pdfIn PDF document text
    • https://cdn.sqhk.co/menodotitit/eGs4gfw/60520215063.pdfIn PDF document text
    • https://guvepilafofifiv.weebly.com/uploads/1/3/4/6/134682232/lebegoxaregazaretet.pdfIn PDF document text
    • http://itagreen.fun/90389267628yltj3.pdfIn PDF document text
    • http://reduslim-officialsite.site/wukededqojf.pdfIn PDF document text
    • https://raragunaxunu.weebly.com/uploads/1/3/4/8/134886293/6f315c1184015d2.pdfIn PDF document text
    • https://sisuveraxom.weebly.com/uploads/1/3/2/7/132740665/senuzojukepesi-wosuluge-kujita-mipolujefusawo.pdfIn PDF document text
    • https://tibufidis.weebly.com/uploads/1/3/0/7/130740046/db6dd0a13d.pdfIn PDF document text
    • http://wejowadizabudex.mypressonline.com/how_much_does_it_cost_to_run_a_gas_wall_heater.pdfIn PDF document text
    • https://ginufadep.weebly.com/uploads/1/3/4/6/134668932/genipuziwadori-zukidowabom-rexasumakegi.pdfIn PDF document text
    • https://likifovufuli.weebly.com/uploads/1/3/4/5/134588617/7378fc5.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/jepavilutabilel/cycloramic_app_iphone_5s_free.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/kedefutofoju.pdfIn PDF document text
    • http://zapusov.atwebpages.com/artabet_book.pdfIn PDF document text
    • http://xuxerutiwuv.onlinewebshop.net/21124455177.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_off00038c84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38C84 5936 bytes
SHA-256: c2e150c4f4f64c4060deec550b70f1ddcfaa2a93f09ef76c9f434f98ab0fcad1
font_01_sfnt_off0003a0a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A0A2 11652 bytes
SHA-256: fec7d1b22d57f1d8f8b349ef9732ccbaee12bf2da6eb9fec63f41b5b487bad88

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