Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc534f701044706f…

MALICIOUS

PDF

74.9 KB Created: 2021-03-18 10:31:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 37a121c7e6d66444e377f5d8f805c340 SHA-1: 82a67f561b31d191b839c72043db71b36495e73f SHA-256: fc534f701044706f30e2540ccc49386545abc1f29b332a31ac23e201dd9d160f
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, which is likely used to host a malicious payload or redirect to a phishing site. The document body, though partially corrupted, suggests a lure related to 'dna replication copying the code answers'. No scripts were extracted, but the presence of external URIs and the overall detection suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://druttle.ru/wix?keyword=12.3+dna+replication+copying+the+code+answers
    • http://strapslap.online/pufuteu7p8m.pdf
    • http://evilcheats.fun/nodezegikedojuzowajx30g7.pdf
    • https://static.s123-cdn-static.com/uploads/4455890/normal_5ff84e4f31fd8.pdf
    • http://luminar3-download.xyz/sekopixav18gd3.pdf
    • https://cdn.sqhk.co/sefesolos/aihyjgJ/14135050886.pdf
    • https://cdn.sqhk.co/gemadaruvow/iRhhobR/29295992642.pdf
    • https://cdn-cms.f-static.net/uploads/4488330/normal_6027858f53423.pdf
    • http://hangzhoumetal.ru/what_is_the_metric_unit_for_length_meters_miles_distance_inchesu9qs4.pdf
    • http://finansi-7.online/10190403846bqx58.pdf
    • http://geloritiveda.mygamesonline.org/the_merry_adventures_of_robin_hood_chapter_3_summary.pdf
    • https://cdn.sqhk.co/gabebutiz/jcc2xjb/bopikuletotuked.pdf
    • https://cdn-cms.f-static.net/uploads/4470980/normal_604ecda731de9.pdf
    • http://fafikup.scienceontheweb.net/lazuwetisozevuzaxipaf.pdf
    • http://promooffer.site/dsm_5_espaolj66cm.pdf
    • https://cdn.sqhk.co/gewewoturila/ic11Lwf/56812536709.pdf
    • http://afracheat2.xyz/nabezakodudobamidfo.pdf
    • http://nusururak.22web.org/129660673.pdf
    • http://amst-watch-v1.club/ioptron_smarteq_pro_manualk7x97.pdf
    • https://cdn.sqhk.co/jabisopomuxo/hdgiikK/xenovowupogaxakifusunar.pdf
    • https://cdn-cms.f-static.net/uploads/4414501/normal_5fd87b79193dd.pdf
    • https://static.s123-cdn-static.com/uploads/4401723/normal_5ffff7f2302ba.pdf
    • http://homiak.fun/zepalapovosebakezifofedox6wrjg.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://wozimape.onlinewebshop.net/guzeze.pdf
    • http://xofafatererowu.rf.gd/rivimezo.pdf
    • http://dejifiragilu.epizy.com/99211091438.pdf
    • http://buluperase.epizy.com/how_to_download_wii_menu_on_dolphin.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_off0000d9fe.bin
f21a5db2af1c5cf1a1522d5c70dc6cacbec7c1133b08ee8f323ef7f1f65b13d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9FE 5604 bytes
font_01_sfnt_off0000ed08.bin
8e915105ae98bab92602fd872d4de1961d65f91b2e33ed25db0db2e117454af3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED08 10184 bytes
font_02_sfnt_off00010fab.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FAB 4324 bytes

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