Malicious PDF — malware analysis report

Static analysis result for SHA-256 09cb26906141081c…

MALICIOUS

PDF

71.2 KB Created: 2021-02-27 13:16:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ad6d3fbddbde3d9f1d411f4faf9ad56 SHA-1: dd51d9b273d7c07143e09ede082fc776da6f2ad7 SHA-256: 09cb26906141081c57ac06d1fc0de35cafe96661860ca3874379ba29fc393961
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 pointing to a suspicious domain, likely intended to trick the user into clicking it for information. The document body, though partially corrupted, suggests a lure related to salary information.

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://jumiwimov.ru/123?utm_term=marketing+manager+salary+per+month
    • http://jiwapadenejeza.getenjoyment.net/68429753395.pdf
    • https://static.s123-cdn-static.com/uploads/4450864/normal_5fe25f166f104.pdf
    • https://cdn-cms.f-static.net/uploads/4404964/normal_5fdae51a32477.pdf
    • https://static.s123-cdn-static.com/uploads/4449618/normal_5fc66510ca7d2.pdf
    • https://static.s123-cdn-static.com/uploads/4380084/normal_5fcc7de0c00e9.pdf
    • http://forovasax.medianewsonline.com/preposition_activities_for_grade_5.pdf
    • http://fazejajogavu.medianewsonline.com/99986608431.pdf
    • http://rubewox.sportsontheweb.net/how_to_remove_first_alert_smoke_detector.pdf
    • http://servempieza.site/kenosha_wisconsin_weather_reportm84ap.pdf
    • https://jugivukovetid.weebly.com/uploads/1/3/0/7/130739525/1631091.pdf
    • http://fbcopyright-center.com/ximexugomitt26u1.pdf
    • http://gemubanabugawa.mypressonline.com/what_genre_is_princess_academy.pdf
    • http://fasekafalig.scienceontheweb.net/where_is_the_furnace_filter_on_a_goodman_furnace.pdf
    • https://jovawovifo.weebly.com/uploads/1/3/4/8/134883275/naxepavepev.pdf
    • http://retamos.mygamesonline.org/15596095842.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mibiwivanetuj/watch_pride_and_prejudice_movie_2005_online_for_free_putlockers.pdf
    • https://s3.amazonaws.com/nowokil/69127348117.pdf
    • https://s3.amazonaws.com/gapivegek/bissell_pet_hair_eraser_1987e_handheld_vacuum_cleaner.pdf
    • http://vunonam.atwebpages.com/43307987885.pdf
    • https://s3.amazonaws.com/vapelurowar/classic_nursery_rhymes_lyrics.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_off0000d8fd.bin
e157b2a4adc6babf2f98b94022c4ec16b7b615f69be8586457a3ca43a8f348b0
pdf-font-stream PDF embedded font (sfnt) at offset 0xD8FD 5404 bytes
font_01_sfnt_off0000eb4d.bin
16f4f8b2d6c06f12cd2b562b50e06ee077a982f2b66800f753dfbe9325cdc732
pdf-font-stream PDF embedded font (sfnt) at offset 0xEB4D 10704 bytes