Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fda43ac5e330381…

MALICIOUS

PDF

133.9 KB Created: 2021-03-19 11:12:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b4846c830eb619adcf229d90d2258edc SHA-1: 168d2ebd29eda5f670c42c581317ba397679d766 SHA-256: 8fda43ac5e330381b6aed37ae424ad4a41d455142c39ee69391da7f3e717d9e6
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://gimoguvi.ru/award?keyword=a+history+of+the+modernist+novel+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4402486/normal_5feefc9286207.pdfIn PDF document text
    • https://cdn.sqhk.co/polopomoset/hb9Khan/calgary_stampede_chuckwagon_race_wreck.pdfIn PDF document text
    • https://cdn.sqhk.co/rawewosit/jahjqjd/tatenopagima.pdfIn PDF document text
    • https://cdn.sqhk.co/mufipofunup/cLyggaS/dazuladutewimazevavizowob.pdfIn PDF document text
    • https://cdn.sqhk.co/jolodovi/jlAjgFe/dubatek.pdfIn PDF document text
    • https://cdn.sqhk.co/surodamiz/iaM7jbW/marvel_comics_release_dates_august.pdfIn PDF document text
    • https://cdn.sqhk.co/botonerepap/aehiyap/geniebook_review_kiasu_parents.pdfIn PDF document text
    • https://cdn.sqhk.co/nevupediwix/NptT1jj/moto_racing_mania_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/segevenujuka/aYUdR3p/10408864667.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463264/normal_6045e2d39f61e.pdfIn PDF document text
    • https://cdn.sqhk.co/wejawujagi/geOvZjc/ben_10_alien_experience_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/jifigetuxu/fjcZjgG/fun_things_to_do_in_philly_tonight.pdfIn PDF document text
    • https://cdn.sqhk.co/nasubivapu/gfzgiJj/26317215076.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/penale/22576931288.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/6301895652.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3a0f6d7-ad2d-432d-8c85-e9c182401b9b/fitoxom.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/26945111692.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f489868-d66c-4d6e-9b99-937e832d049e/62776167088.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/10064285884.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94ea0ec9-70c5-4234-9689-f99c9a653e28/11400694020.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/justin_timberlake_mirrors_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/434223cf-cf9e-46c0-8f97-0ac931d99f50/59725316358.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_off0001c88d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C88D 5224 bytes
SHA-256: 2a7548540d6c2accf07da761a6a70481ec0c54f5912f8a2a9ae9a7d80c751378
font_01_sfnt_off0001da3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DA3A 16912 bytes
SHA-256: fc565d6b2f8e263950615edf2f1b0c00f01a2b391ef401f550797d64968f702c

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