Malicious PDF — malware analysis report

Static analysis result for SHA-256 f26415406cb48532…

MALICIOUS

PDF

69.6 KB Created: 2021-03-25 04:10:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1c5edefeb63c715572a54bd7961c9a84 SHA-1: 289945b289133499479667ddda0824e3e0967c62 SHA-256: f26415406cb4853249d51499452e936b99744f9fb41c6e67779225d7f865f9e1
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier. It contains an embedded URI pointing to a suspicious domain, likely intended to host malicious content or phishing pages. The document body, though heavily obfuscated, suggests a lure related to 'information technology jobs examples'. No scripts were extracted, but the presence of an external URI and the phishing detection strongly indicate a malicious intent to redirect the user to a compromised site.

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://midufefew.ru/aws?utm_term=information+technology+jobs+examples
    • https://dejutuzalusabi.weebly.com/uploads/1/3/4/8/134869317/felafuw_xivepoxelaginu.pdf
    • https://xefimobabizigur.weebly.com/uploads/1/3/1/6/131637686/5df8d25f9eaf.pdf
    • https://cdn.sqhk.co/wabogoga/ghgggC5/brhs_athletics_twitter.pdf
    • https://jotozorofelafik.weebly.com/uploads/1/3/1/4/131405965/609051.pdf
    • https://cdn.sqhk.co/moviferu/gigfThb/screen_recorder_with_audio_and_facecam_for_laptop.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fonenafuw.rf.gd/bitujopa.pdf
    • http://watijosanowo.epizy.com/gifojujuduwudorobejiri.pdf
    • https://ac614e2c-2e00-43e4-a80f-2c6bce9fb64b.filesusr.com/ugd/f103bb_37a312206e7f4632a73c70d7e92698dd.pdf?index=true
    • https://s3.amazonaws.com/mefovu/developmental_milestones_13-24_months.pdf
    • http://diwuvugu.epizy.com/xekelelobamamebi.pdf
    • https://s3.amazonaws.com/makumapikeze/angular_4_form_submit_example.pdf
    • https://d71fc03c-aea6-48f7-a990-8afffb22108d.filesusr.com/ugd/3de8a6_f825e68835a3446a846ef46d566ceaef.pdf?index=true
    • https://s3.amazonaws.com/juzinaramip/tesomu.pdf
    • https://26c1613e-5d28-4fa3-89cb-3d2c9ab59faf.filesusr.com/ugd/fe83c3_3b0ed0f5d19641e093564661f4d5253b.pdf?index=true
    • https://9e1b5e4e-b4ab-405b-8fdf-b3b6d7b19c28.filesusr.com/ugd/94ea38_2473a25bf0ee402e9f084c9b6fa0a319.pdf?index=true
    • https://s3.amazonaws.com/zosevid/latest_telugu_books_free_download.pdf
    • https://a9d1d3ec-13fa-4b7e-abe1-abe2c2ba1301.filesusr.com/ugd/f83029_c27c09b328f641e6addb7061272c5858.pdf?index=true
    • https://54957a25-093b-4cbd-a4f0-8eb5fea931f0.filesusr.com/ugd/8ba634_fb2dc1b4624346abbb4f42f9db65d2f3.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d190.bin
be9e0c7212df2a59725e5646f03599eb1b79c93e7f73814ec0de05545e7eae19		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD190 5752 bytes
font_01_sfnt_off0000e512.bin
a5718dd7cc8c7b0bf9dbf5e7d5df4ab5b5f15080932b76833b3f74b08f7ddfa2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE512 10640 bytes

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