Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdb337b36f20a435…

MALICIOUS

PDF

84.9 KB Created: 2021-03-25 08:13:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93bef862e2b25d272a0af8c19178952a SHA-1: d3b8518dcd8cc8c5984fa66629966e4d4beec797 SHA-256: bdb337b36f20a435d4cc4c4e5f9da1fa23d25b42deebe2dc511cd141cd25b49a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to a product manual, suggesting a lure to trick users into clicking the malicious link.

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://dafemum.ru/wix?keyword=bissell+powerforce+helix+1240+manual
    • http://riragukigud.scienceontheweb.net/xixixa.pdf
    • https://static.s123-cdn-static.com/uploads/4473903/normal_60035f5792669.pdf
    • http://pixunune.sportsontheweb.net/attestation_pole_emploi_vierge_particulier_employeur.pdf
    • https://static.s123-cdn-static.com/uploads/4466379/normal_5fde59a0e9c7d.pdf
    • http://kefikajutadab.22web.org/dungeons_and_dragons_5e_unearthed_arcana.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/b3777afc-4577-4952-889c-9a5e33a0579e/how_to_take_apart_an_aquasource_faucet.pdf
    • http://diwedixeku.rf.gd/5423744135.pdf
    • http://nukivamo.myartsonline.com/dire_straits_brothers_in_arms_guitar.pdf
    • https://uploads.strikinglycdn.com/files/1eca852a-972a-46d6-b447-8d23122d20e0/diana_her_true_story_1st_edition.pdf
    • http://tebalakafepikob.rf.gd/how_to_set_timer_on_black_and_decker_bread_maker.pdf
    • https://uploads.strikinglycdn.com/files/a96c7170-d5dd-4bec-beea-5b0239159ab2/vijubedosusebosuku.pdf
    • https://s3.amazonaws.com/vufuzewasi/varubunubezulam.pdf
    • https://s3.amazonaws.com/tesapibebujep/valid_email_format_checker.pdf
    • https://uploads.strikinglycdn.com/files/7a1f8ff4-99c4-4d19-b65e-ed201900fbfa/73718073450.pdf
    • https://uploads.strikinglycdn.com/files/3560d22b-2686-4a33-8eaf-2e7a65da132b/85612694076.pdf
    • http://vugugemo.atwebpages.com/99416378778.pdf
    • https://s3.amazonaws.com/paxunu/26873532562.pdf
    • http://gulorexe.epizy.com/comparison_in_english.pdf
    • https://s3.amazonaws.com/xapota/66479977052.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb66.bin
754856d834e09e3f0e4acddabcdd098dde4e85f83f4fd8300a3269ca2be2a5c8
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB66 5680 bytes
font_01_sfnt_off00010ea9.bin
0fe6735292e359ae0cc50d3a76fea78863b2b3137ce81949dee2ee7d1a9cc395
pdf-font-stream PDF embedded font (sfnt) at offset 0x10EA9 12368 bytes
font_02_sfnt_off0001384f.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x1384F 4324 bytes