Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f4880db3065900d…

MALICIOUS

PDF

69.1 KB Created: 2021-03-23 00:54:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 75c0d7c3fc3755bcdb3361a58bac9391 SHA-1: 909e7996b4d8f0c3e0a26bc9e1efed9dabc5470e SHA-256: 4f4880db3065900dbe9967f6b97c7ad9239e94809e8ac21edbe8f6b162fdc0e7
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that mimics a search query for a common product, suggesting a phishing or malware distribution lure. No scripts were extracted, but the presence of the malicious URL is a strong indicator of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://nipisod.ru/aws?utm_term=staples+mailmate+shredder+won%2527t+turn+on PDF link annotation
    • http://dovulup.iblogger.org/wivevozosa.pdfIn PDF document text
    • http://tivulaxovena.22web.org/mackie_2404-vlz4_manual_espaol.pdfIn PDF document text
    • http://dmgameplan.com/aquatic_biomes_worksheet_high_school8kqnz.pdfIn PDF document text
    • http://item-get.top/disigibz92lc.pdfIn PDF document text
    • http://maska-respirator.com/fifeviso03o75.pdfIn PDF document text
    • http://kigapululapov.22web.org/palmers_olive_oil_formula_smoothing_shampoo_400ml.pdfIn PDF document text
    • http://septiki-rf.website/80705024397mum4c.pdfIn PDF document text
    • http://lagujegivupani.22web.org/free_pictures_of_flowers_to.pdfIn PDF document text
    • http://repair-planshetov.ru/wujarezusatifkecb7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pifajipap.rf.gd/intercessory_prayer_scriptures.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e5b2a75-1560-4a72-a64d-e822d2d36425/hp_laserjet_pro_400_m401dne_paper_tray.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/wipomisupow.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/cataclysm_timewalking_dungeon_guide.pdfIn PDF document text
    • http://nexofemexer.epizy.com/boccaccio_teseida.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/28581042522.pdfIn PDF document text
    • http://gaxodusipif.epizy.com/pretty_girl_nightcore_remix.pdfIn PDF document text
    • http://naluvexuwemajub.rf.gd/happy_birthday_piano_arrangement.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/caravan_of_love_song.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/59747106665.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/zukoda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fac5f8d7-593f-40df-bf22-7270a3ec0763/29593402863.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_off0000d0fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0FD 5428 bytes
SHA-256: c27429082ae8bddabf9ab135666e489ae2756dd294372db47ce6a8ba0dce0d2e
font_01_sfnt_off0000e35b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE35B 10432 bytes
SHA-256: 6e8658d4a4a87aa13cfa31430e09669d654f60dcd01da5a64626c7239cb6dca2

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