Malicious PDF — malware analysis report

Static analysis result for SHA-256 72bd794f731a809e…

MALICIOUS

PDF

78.4 KB Created: 2021-03-07 12:19:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 6b09729eb5b7c56fc42389279910bca4 SHA-1: d2989216612fcebe1cf17e14ac707c803a618403 SHA-256: 72bd794f731a809e41eef458eb4a81ed515ab41d0132258e31a63d06190895e6
136 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 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://nipisod.ru/aws?utm_term=what+is+the+best+oil+for+deep+frying+chicken PDF link annotation
    • http://com-copyrighit.com/42523978425oz35u.pdfIn PDF document text
    • http://tortomsk.ru/wilton_piping_nozzles_chartfpzf4.pdfIn PDF document text
    • http://kemytbok.xyz/neato_botvac_d80_reviewg1kw3.pdfIn PDF document text
    • http://educationonline.website/ninja_van_driver_iosdvfsb.pdfIn PDF document text
    • http://my-credit.info/jump_force_controls_switch_charactersp4l55.pdfIn PDF document text
    • http://help-feedback-amzn8.xyz/google_forms_quiz_time_limitwsges.pdfIn PDF document text
    • http://com-login8.xyz/lojidiforud5st9.pdfIn PDF document text
    • http://pelinebaj.mypressonline.com/89005321821.pdfIn PDF document text
    • http://vaxiliwu.medianewsonline.com/howard_leight_impact_sport_bolt_electronic_earmuff.pdfIn PDF document text
    • http://lovelyhouse.online/dadowiguganulipuzosnst5v.pdfIn PDF document text
    • http://xawegap.mywebcommunity.org/fisher_paykel_dishdrawer_dishwasher_reviews.pdfIn PDF document text
    • http://jinevul.mygamesonline.org/feeling_words_that_start_with_e.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/gofiguj/yasin_dan_tahlil_nu.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/fitbit_charge_3_manual_francais.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0005ff0-4027-4977-95e2-25f453f05275/mofilufi.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/86026219917.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ea18a00-31bc-4d4f-a38d-428ff2d20ad3/19692536862.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/89993381962.pdfIn PDF document text
    • http://zubiluwetij.myartsonline.com/70262934090.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/kelechi_africana_new_song_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ff6407d-a492-40a6-91ab-b85e49ca57c1/42294748066.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/happy_birthday_piano_free_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9057faa3-444f-4598-a330-eb75d7e88ddf/toreteguxisivisez.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_off0000f3ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3FF 5736 bytes
SHA-256: 39eece363064da0fbbbcca732f4a9e679c6015fae81509bd1aeb2e1167cf2f90
font_01_sfnt_off00010798.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10798 10640 bytes
SHA-256: 0a21dd9eb83d6c9bc119c721bb1d31ab1816b05a1d41932f39631671627877c0

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