Malicious PDF — malware analysis report

Static analysis result for SHA-256 d119040e488c18ac…

MALICIOUS

PDF

78.0 KB Created: 2021-03-17 08:12:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f2c5c275756e86e79f06cdd78ec8f16f SHA-1: 762e1ff2c13315f5357afb3992b955d50a388460 SHA-256: d119040e488c18ac001482ce86f21de8da4da218b319ddf9e815d2c8bfd36ddc
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, 'https://yafferge.ru/wix?keyword=minecraft+unblocked+online+1.5.2', which is designed to lure users to potentially harmful content. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://yafferge.ru/wix?keyword=minecraft+unblocked+online+1.5.2
    • http://befotuke.mywebcommunity.org/diary_of_a_wimpy_kid_10-14.pdf
    • http://ru-payment.casa/werewolves_2_pack_mentality3ir8m.pdf
    • http://lg-supportteam.com/short_mystery_storiesemrym.pdf
    • http://fufejezonodim.mywebcommunity.org/relaneziri.pdf
    • http://opensoda.pro/how_to_use_a_hoover_steamvac_spinscrub_carpet_cleanerurg9k.pdf
    • http://bloomwithdeanna.com/91125022542r2tij.pdf
    • http://zatoboyvibor.fun/80942341178ewevk.pdf
    • http://winoorama.space/what_does_mika_meanrtx2m.pdf
    • http://vannabanyavsedela.xyz/gastroparesis_diabetesicitv.pdf
    • http://prizinsta.site/canal_du_midi_cycling_self-_guided408q5.pdf
    • http://duxinivodozular.mywebcommunity.org/download_1100_words.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/rejiner/schengen_visa_application_form_free.pdf
    • https://s3.amazonaws.com/fewunadupop/kumejurewejo.pdf
    • https://s3.amazonaws.com/vufuzewasi/lexumunepenexerulijagipo.pdf
    • https://s3.amazonaws.com/pasawe/weather_report_brentwood_ca.pdf
    • https://uploads.strikinglycdn.com/files/e8a73aca-c6a4-473d-81a5-28ef5536a9eb/pironowujase.pdf
    • https://s3.amazonaws.com/jasadavebaga/89995426159.pdf
    • https://s3.amazonaws.com/dazemi/nitafivenetesimusilapu.pdf
    • https://s3.amazonaws.com/vinivuxo/cheat_engine_apk_android_tanpa_root.pdf
    • https://uploads.strikinglycdn.com/files/2d7010e6-a931-49be-b052-5b7b96441371/should_i_listen_to_music_while_running.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_off0000f418.bin
84c7cb764b38d3349e98b1589d222c7d588b4d0851522e8205a0b5f548fb9ea9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF418 5388 bytes
font_01_sfnt_off00010694.bin
631033ad3b48bffa4d2f56dc2764fbe2aeb6eab394ffe09a9736cbc1c040eb24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10694 10652 bytes

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