Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bff9a7366e47b1e…

MALICIOUS

PDF

79.5 KB Created: 2021-03-17 15:11:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32f157e6a549a07ee38db429d3b37e33 SHA-1: 22dedce01c9c0e840060486839a7ed726eb1fd93 SHA-256: 0bff9a7366e47b1ee9a209d021df47abec014fbf1e287fd9c0baf3aee2ff6175
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body contains obfuscated text that includes keywords related to a 'Nokia 8 android one mi', suggesting a lure for a phishing or scam operation. An external URI pointing to 'nipisod.ru' was extracted, which is likely the destination for the malicious payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=nokia+8+android+one+mi
    • https://cdn-cms.f-static.net/uploads/4501503/normal_6032d67522990.pdf
    • https://xopapirepukonut.weebly.com/uploads/1/3/6/0/136053795/tezonojujiso_vixofalinale_zofale.pdf
    • https://cdn-cms.f-static.net/uploads/4480590/normal_5fd17b7f8a5be.pdf
    • http://jenuxijaf.mygamesonline.org/maytag_bravos_washer_not_spinning.pdf
    • https://mikugixu.weebly.com/uploads/1/3/1/4/131438693/judiropalobas.pdf
    • https://static.s123-cdn-static.com/uploads/4383572/normal_5ff1bcd022dda.pdf
    • https://static.s123-cdn-static.com/uploads/4375353/normal_5ff7f025458dd.pdf
    • https://static.s123-cdn-static.com/uploads/4482218/normal_5ff8903525e45.pdf
    • http://kiritisivasol.mywebcommunity.org/foxuwuwelatugal.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://palibam.atwebpages.com/apprendre_le_piano.pdf
    • http://zugepoguj.onlinewebshop.net/creditors_clerk_job_description.pdf
    • https://s3.amazonaws.com/tapelu/causas_de_esclerosis_multiple.pdf
    • https://s3.amazonaws.com/rovikibixu/tuweritifurilufodiw.pdf
    • https://s3.amazonaws.com/mogipegi/60975480292.pdf
    • https://s3.amazonaws.com/nijosinizo/rigej.pdf
    • https://s3.amazonaws.com/badodemebo/destiny_2_hunter_guide_forsaken.pdf
    • https://6e678f60-abc6-404c-883a-cd1729fdffee.filesusr.com/ugd/e4291f_083e27f9aa3e4f65a8d28576e4ffea6e.pdf?index=true
    • https://s3.amazonaws.com/sojaxub/freeware_antivirus_for_windows_xp.pdf
    • https://21e323bd-7fdd-46e9-a6c7-4880e76d7610.filesusr.com/ugd/0a51c1_f37b31b32a694395add50ddd9b8e2c6e.pdf?index=true
    • https://s3.amazonaws.com/pigolo/68798977812.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edbc.bin
ab27d69bec8fb431404dc99669207fd7085d2c6c5eb18dcd9c9055b0228e9095
pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBC 4988 bytes
font_01_sfnt_off0000fea7.bin
20e8df34e4af0cb6e0419c960ff1eb7e712c6fb6d2977fcedb7cde421b0293a1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA7 21936 bytes