Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a55eff2c629d27e…

MALICIOUS

PDF

68.0 KB Created: 2021-02-27 12:34:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f467d12f0e5684a5514a23facfd64246 SHA-1: b9aec05043e2395efe761efcb207d5b6fdcc42a2 SHA-256: 2a55eff2c629d27e6d2cdaaa2d2f2850dd8ab2e678f55e2fd50330048f74a440
96 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with the primary one being `https://dafemum.ru/strik?utm_term=what+size+belt+fits+a+42+inch+mower+deck`. The document body, though heavily obfuscated, suggests a lure related to a search query. Heuristics indicate external URI usage and a high ML classification score, consistent with phishing or malware delivery. No scripts were extracted, but the presence of embedded URLs and the overall detection suggest a malicious intent to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dafemum.ru/strik?utm_term=what+size+belt+fits+a+42+inch+mower+deck
    • https://cdn.sqhk.co/dagorabowixu/ghiaLhe/mechanism_meaning_in_urdu.pdf
    • http://bloomwithdeanna.com/ruzuvejubqojlp.pdf
    • https://cdn.sqhk.co/xutazazo/cihe6hh/bidagodudafudago.pdf
    • https://cdn.sqhk.co/zanivuwiduvo/ahLgigj/smallest_planet_in_the_solar_system_2020.pdf
    • http://docita.fun/85947996442xyte.pdf
    • http://c-advance.space/2973441040219mq2.pdf
    • http://prequester.online/panaderia_y_reposteria_para_profesiog7t4c.pdf
    • http://blekrossi.ru/lupunepumodisosbx.pdf
    • https://cdn.sqhk.co/kukabelek/ijjalhd/fagafaloxozapa.pdf
    • http://rewita.fun/lijudkyefp.pdf
    • https://cdn.sqhk.co/fufigavaki/GhfBibN/musica_disco_90_mix.pdf
    • https://cdn-cms.f-static.net/uploads/4497095/normal_6026073c41e7d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/sefabe/what_are_the_three_types_of_warehouse.pdf
    • https://s3.amazonaws.com/davubewu/acca_f9_exam_kit_free.pdf
    • https://s3.amazonaws.com/lomuper/24424096768.pdf
    • https://s3.amazonaws.com/numunenoji/asus_tinker_board_android_play_store.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_off0000ca35.bin
a5f475ef51d593ec2945f132e361a1cc8ecd3dbc29bab4e0ce007f79e5c38a1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA35 5840 bytes
font_01_sfnt_off0000de14.bin
56905423c00b1e0e016f3cde97508b1d3396d5afebf2111a2e1c2739c7f65a21		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE14 10780 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.