Malicious PDF — malware analysis report

Static analysis result for SHA-256 16109d86931c072a…

MALICIOUS

PDF

74.0 KB Created: 2021-03-18 12:44:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00618a93fec342c25a4fe97470c9acc0 SHA-1: 4a5561a27a217d32ee23afe98fae34d30ecc70ab SHA-256: 16109d86931c072a182836eeb814612f4c128e890f7e1ef18b63d29a0059660a
136 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a high-severity rule indicating an image-heavy PDF with invisible links to suspicious domains. The ML classifier and ClamAV also strongly indicated maliciousness. The embedded URLs suggest a phishing or malware distribution attempt, likely serving as a lure to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xezojetit.ru/award?keyword=acgih+portugues+pdf+download
    • https://jofilelaritavux.weebly.com/uploads/1/3/4/1/134108607/3539929.pdf
    • https://rixesibajarij.weebly.com/uploads/1/3/4/7/134712387/niresuvegisow.pdf
    • http://osummer.space/hallelujah_cello_sheet_musicp81j3.pdf
    • http://pubgmobiie.com/6350655097fe8h7.pdf
    • https://fikuvigobe.weebly.com/uploads/1/3/4/5/134582673/roxovusufim.pdf
    • http://domsale.xyz/981956182225ke4k.pdf
    • http://loginwithfb.site/letra_de_alabanza_el_poder_del_cristiano_esta_en_la_oracion4vphi.pdf
    • http://goloszauniver.fun/gonawidiseg6t8t.pdf
    • https://static.s123-cdn-static.com/uploads/4418185/normal_5ff03b95c03dc.pdf
    • https://cdn.sqhk.co/kulukopupiw/dEla0R2/apple_airpods_pro_boxing_day_sale.pdf
    • https://basedupapopulow.weebly.com/uploads/1/3/4/3/134344364/senevodutebi.pdf
    • https://cdn-cms.f-static.net/uploads/4493600/normal_601d169d42651.pdf
    • https://cdn-cms.f-static.net/uploads/4402963/normal_6042fe59f111e.pdf
    • http://update-win20.online/how_was_the_new_imperialism_different_from_oldminlo.pdf
    • http://xteenware.online/7th_grade_additive_inverse_worksheett0oso.pdf
    • https://duparumiwope.weebly.com/uploads/1/3/4/7/134707207/2330686.pdf
    • https://cdn.sqhk.co/zuvifilezaja/jjhizgj/20690568898.pdf
    • https://static.s123-cdn-static.com/uploads/4415322/normal_5fc9a8a6ea01b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/widiku/broadsheet_brunswick_lunch.pdf
    • https://s3.amazonaws.com/petubapizo/sony_alpha_7r_iii_datenblatt.pdf
    • https://s3.amazonaws.com/geraromu/ruzude.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0cb.bin
812e04b0cb701e77d4ed6a0a9752de6aab340f7a6d6c8a31d794665780192a4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD0CB 5380 bytes
font_01_sfnt_off0000e322.bin
7bb24f3b45a0c954d3e484a4da555b2ed88ace4884abf1a71fb7381b4ec5207b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE322 12516 bytes
font_02_sfnt_off00010ac1.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10AC1 4324 bytes

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