Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfb94657302c585a…

MALICIOUS

PDF

100.8 KB Created: 2021-03-26 09:27:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f22efc797ae34a4cd4a5f5a37150dab2 SHA-1: d81a421d9f344923e338c3d5624481305d33a53c SHA-256: bfb94657302c585a407ed5b502c5b83befd497be1531be6f8711d87c19fa28d7
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. It contains an embedded URI pointing to a suspicious domain, likely used to redirect the user to a phishing or malware hosting site. The presence of PDF-specific heuristics further supports its classification as a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/wix?keyword=audio+technica+at2020+mic+arm
    • http://shopeuro.pro/nojewiruce7q.pdf
    • https://jabekidedur.weebly.com/uploads/1/3/1/6/131636775/tasuwamivub_fujazovewafe_tizagaxewu_gojibu.pdf
    • http://my-favshopd.online/zosajqz579.pdf
    • http://daliadiago.com/what_is_honda_a13_servicedafek.pdf
    • http://everydayy.fun/juderexeforunetojame0v86p.pdf
    • http://vkrowl.com/10896649908cwaod.pdf
    • http://alphabitx.com/the_ugliest_dog_in_the_world_2019b4quh.pdf
    • https://fudosabitewixo.weebly.com/uploads/1/3/1/6/131636852/lesonepave.pdf
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mefovu/gerund_phrase_worksheet_with_answers.pdf
    • https://s3.amazonaws.com/muvojugejoxip/cbse_guide_grade_7.pdf
    • https://b354d503-40d1-4c97-84b4-bc0b16c12f35.filesusr.com/ugd/8c7d07_4f86cb7222034dc0a004a71bcfce7391.pdf?index=true
    • https://s3.amazonaws.com/vosimalume/67546276137.pdf
    • http://ritarejameja.epizy.com/38726521356.pdf
    • http://bodiluduf.rf.gd/15204629216.pdf
    • http://zuwarevozaraxa.rf.gd/64362846805.pdf
    • https://e222b685-7c7f-4cee-b050-218328c89257.filesusr.com/ugd/c0232f_26342c7aacac4d8ba6a9572829c2e112.pdf?index=true
    • http://mutaluwuvekigo.rf.gd/rimuruto.pdf
    • https://436240a4-ef10-404e-ad90-c5cab949c7af.filesusr.com/ugd/3fb742_d74e1e10c3bd4f63a6af0bf0e8a5888b.pdf?index=true
    • https://s3.amazonaws.com/zubuwujoxom/16487920781.pdf
    • https://71f68c9c-1037-483c-a0ca-f268b7ddd3c8.filesusr.com/ugd/87fdc7_4e9e0a37941e44eebb6a028d2a7c4c08.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_off0000eae9.bin
561c22e17316dea9c10860a8f30f07421047c9a62b0a305eb45be322dcf8cec0
pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE9 32352 bytes
font_01_sfnt_off00014f15.bin
8a4da47319dcf4ecbe0f4e1bf7b0c94b9b7bf0e69ea2958f30fc5b136ceca600
pdf-font-stream PDF embedded font (sfnt) at offset 0x14F15 5232 bytes
font_02_sfnt_off000160b4.bin
0584f23fc66aa37716e8c15d3a58ae9006ebbca846e6b319a23950cad65e7609
pdf-font-stream PDF embedded font (sfnt) at offset 0x160B4 10744 bytes