Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1eb096e1ea8d060…

MALICIOUS

PDF

75.0 KB Created: 2021-03-14 18:00:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4715487d70d7f25db5c87baa6a2a13d8 SHA-1: d42b0e1a913dbfe57d908d5a18d05a29e5b13317 SHA-256: b1eb096e1ea8d060c3c1a08fba01465a0a1f5cbb4230fe8d8ae4dc8ff057a051
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of an external URI pointing to a suspicious domain, combined with the document body's deceptive content, suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious payload delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://kuzutuzo.ru/award?keyword=chemistry+balanced+equations+pdf
    • http://procripton.com/book_after_fire_and_ice_warriorsfvmkm.pdf
    • https://static.s123-cdn-static.com/uploads/4425912/normal_5fe48e394e0f4.pdf
    • http://ninuwekevap.scienceontheweb.net/91090895973.pdf
    • http://rusewigojubilon.mygamesonline.org/research_proposal_sample_in_physical_education.pdf
    • https://cdn-cms.f-static.net/uploads/4366305/normal_601120640f660.pdf
    • http://tixesikixux.mygamesonline.org/why_functional_programming_in_java_8.pdf
    • https://lurofigugibax.weebly.com/uploads/1/3/4/6/134686006/legovoxadajozugi.pdf
    • http://martakkord.ru/ergo_360_instruction_manual9ig0o.pdf
    • https://cdn-cms.f-static.net/uploads/4505096/normal_6022232da9282.pdf
    • https://cdn-cms.f-static.net/uploads/4453134/normal_602412d0b942e.pdf
    • https://cdn-cms.f-static.net/uploads/4478669/normal_601a849d90422.pdf
    • http://apple-fruit.space/android_device_recovery_modeqlxwx.pdf
    • http://fullpisetc.ru/667293917975c6lb.pdf
    • https://cdn-cms.f-static.net/uploads/4373987/normal_603d52033dfc9.pdf
    • https://pisilobeko.weebly.com/uploads/1/3/4/7/134728547/retugesezumima_fuwodulad.pdf
    • https://rorezumi.weebly.com/uploads/1/3/4/5/134591247/1497992.pdf
    • https://static.s123-cdn-static.com/uploads/4379032/normal_5fe401589be13.pdf
    • https://bapanezuginu.weebly.com/uploads/1/3/5/3/135310050/vutepodu-zitemelen-raruzitejur.pdf
    • https://cdn-cms.f-static.net/uploads/4372360/normal_5fe6a23b209d6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xawixojupaxixan.onlinewebshop.net/gatineau_park_ski_trail_map.pdf
    • https://s3.amazonaws.com/rurovikejigibu/beautiful_in_white_lyrics.pdf
    • https://s3.amazonaws.com/vonutavekip/80534439366.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_off0000e5ce.bin
1a6dc7b2313793c182394f2140053bd84b1d61264853df29ca6e8c0351086b0b
pdf-font-stream PDF embedded font (sfnt) at offset 0xE5CE 5668 bytes
font_01_sfnt_off0000f8e0.bin
57ca2abc9bf80bcbe78524a3fc2927bdc6516b98be19ebbad66f696c583e3cd1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E0 10936 bytes