Malicious PDF — malware analysis report

Static analysis result for SHA-256 6702be452ca7db73…

MALICIOUS

PDF

75.5 KB Created: 2021-02-28 16:11:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: e6193903786946736e0b552380f250c1 SHA-1: 5a53f3af0c499d6df8a030b4505ae6883a56d6ab SHA-256: 6702be452ca7db73948a3dfe332f7a72897c639febf94c784099fbb36afc8d5c
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'Crossfit arm workout with weights' and embeds a URL pointing to a suspicious domain. ClamAV detection and ML classification strongly indicate maliciousness, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/strik?utm_term=crossfit+arm+workout+with+weights PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4464053/normal_601b8093368f9.pdfIn PDF document text
    • https://cdn.sqhk.co/fesoxuleri/WiBjdhi/sakudoba.pdfIn PDF document text
    • http://zeboxagekej.sportsontheweb.net/traductor_de_espaol_a_ingles_en_pasado_simple.pdfIn PDF document text
    • https://cdn.sqhk.co/bolukawet/MppQmha/bravelands_6_oathkeeper.pdfIn PDF document text
    • http://boothattendant.com/532024708388j8nr.pdfIn PDF document text
    • https://cdn.sqhk.co/vipikunowi/2jjgche/57574506629.pdfIn PDF document text
    • https://cdn.sqhk.co/lubometusoz/hhpJiaz/in_car_racing_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/sitosuduf/hjjha1O/big_launcher_apkpure.pdfIn PDF document text
    • http://japancar-sib.ru/hacker_simulator_pc_gamexskff.pdfIn PDF document text
    • http://tevutubiwij.getenjoyment.net/89219987276.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC5B 5212 bytes
SHA-256: 932654dbe9bc6128be4b1096a9292fb0fc239b81621a2c03fe85313300001f1c
font_01_sfnt_off0000fdfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDFC 10424 bytes
SHA-256: d1a0604e363962914fda28b953b5a1329879e600c4a953164f812aaa435e03c6

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