Malicious PDF — malware analysis report

Static analysis result for SHA-256 6218b65775ef3070…

MALICIOUS

PDF

94.1 KB Created: 2021-04-03 08:27:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64016035b29af1679e7a3275bbb721a7 SHA-1: 72b8a3613eb5bcac4acf07a56403f5813d42041a SHA-256: 6218b65775ef3070c1466110439f05c6afde6b9005eb3746e74dad50514ad7b5
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to a suspicious domain, which is likely used to host a phishing page or download a second-stage payload. The document body, though heavily obfuscated, contains text related to medical definitions, suggesting a lure to disguise the malicious nature of the link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://leonvi.ru/award?keyword=neumonia+nosocomial+definicion+pdf
    • http://nakekizedexu.getenjoyment.net/69693760072.pdf
    • http://zoomita.space/kobafolifikogopoil75q.pdf
    • http://beroveretugir.iblogger.org/shark_professional_steam_mop_replacement_parts.pdf
    • https://wamurereleveti.weebly.com/uploads/1/3/5/3/135392703/vujezixuf.pdf
    • https://static.s123-cdn-static.com/uploads/4458838/normal_5fed2e71b1322.pdf
    • http://vevufilusik.scienceontheweb.net/amphithtre_d_el_jem.pdf
    • http://bred-enligne.com/sewunapapuk65pc.pdf
    • http://lebizifijafaxim.medianewsonline.com/87579510100.pdf
    • http://gravkamen.ru/free_visiting_card_psd_templates1bucr.pdf
    • https://static.s123-cdn-static.com/uploads/4466376/normal_6003ef5fd3c38.pdf
    • https://static.s123-cdn-static.com/uploads/4482027/normal_60014a9ba4b46.pdf
    • http://devicesprotectionforusers.site/rakosukebexul45yg.pdf
    • https://vumizopefi.weebly.com/uploads/1/3/5/3/135313358/sewedokituvuju_biruranew.pdf
    • http://ropixasit.22web.org/the_one_kiera_cass_full_book.pdf
    • https://kegozogoro.weebly.com/uploads/1/3/4/5/134525602/xizuvani_defigun_wusakovobu.pdf
    • http://ogranicbio.space/black_and_decker_electric_weed_eater_gh900_manualogq73.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://koziviwuvep.epizy.com/red_and_blue_lined_handwriting_paper_printable.pdf
    • https://2cfcb734-ec62-4cd9-b61c-03d4762ad765.filesusr.com/ugd/a891c0_0a2e09a5b8564af1b02e03363db9768e.pdf?index=true
    • https://0f424234-9c27-4462-a606-4b2ccecf17d8.filesusr.com/ugd/b42a09_dcd4d3e8071d46bead054ebc7b477498.pdf?index=true
    • https://ed4d48c2-14ea-47f5-a89a-b82193587323.filesusr.com/ugd/8ce377_9891f89313ac4aedb5c04ebbf896c286.pdf?index=true
    • https://b86313a8-447b-404d-ae6d-bc69740d899e.filesusr.com/ugd/e54fc7_48b47be6910348939b0e9dd3c87f6792.pdf?index=true
    • http://rowuvasifa.epizy.com/audio_technica_lp120_bluetooth_speakers.pdf
    • https://ba85394b-11ac-4ca4-926b-74ca936c52e1.filesusr.com/ugd/5ccfc8_4175bb84c22544ac8c27da56f3486e49.pdf?index=true
    • 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_off0001206e.bin
993558ffa09a65b262da3f653349dddd8767d3f4c9159682693f87f3feac241b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1206E 4976 bytes
font_01_sfnt_off0001314a.bin
6890e97e35b53cc713a15afbe88e1c0c8e7a60c0ebbc0a7ef677d3a8ae2d721a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1314A 12696 bytes
font_02_sfnt_off00015aa0.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15AA0 4324 bytes

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