Malicious PDF — malware analysis report

Static analysis result for SHA-256 e484562e7aa3bb7a…

MALICIOUS

PDF

80.1 KB Created: 2021-03-19 00:03:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80c05d4e3ec36dce44459d8de1a85308 SHA-1: b2eca2f7e1d4b5b3bf79dcbce87f853ed8be6264 SHA-256: e484562e7aa3bb7a05d8c6cf21ff3001d2eac7021ed9bdcd42e9c6615fa51c81
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic identifying a 'PDF_SEO_LINK_FARM' pattern. One of the primary URLs, 'https://xezojetit.ru/wix?keyword=cheat+codes+for+pixel+survival+2', suggests a lure to a malicious site. ClamAV detection and ML classification further indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wix?keyword=cheat+codes+for+pixel+survival+2
    • http://puzigodemabotod.iblogger.org/vekovil.pdf
    • https://lusixepapage.weebly.com/uploads/1/3/4/6/134605241/gebixizi_faletobo_lapisetew.pdf
    • https://nunipotewisi.weebly.com/uploads/1/3/4/8/134892443/1717540.pdf
    • http://nefufovej.22web.org/14270654872.pdf
    • https://tugigoboz.weebly.com/uploads/1/3/4/4/134499705/6507133.pdf
    • http://noverst.xyz/un_ejemplo_de_comunicacin_masivaa42h8.pdf
    • http://winewelimefavo.iblogger.org/artificer_guide_5e_2019.pdf
    • http://blog-millionaire.buzz/82892081711g14n9.pdf
    • https://bujipivew.weebly.com/uploads/1/3/4/1/134131373/terutufi.pdf
    • https://xidoxuzi.weebly.com/uploads/1/3/4/7/134707988/5742222.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://bf68d742-fb98-404a-ab47-1dcf24f7df52.filesusr.com/ugd/83e7fd_822cd9767cce4cd690785445c7b6bdaa.pdf?index=true
    • https://7d6e376e-1ee3-4df5-88c1-8d1511d419f8.filesusr.com/ugd/7dd30d_b924662de0a444b08fce664395c0e0e6.pdf?index=true
    • https://uploads.strikinglycdn.com/files/25dfda3e-290e-4812-bc40-f61c096f4146/gopro_hero_4_black_time_lapse_battery_life.pdf
    • https://uploads.strikinglycdn.com/files/f16129a7-43a3-4270-b820-034be9392ba7/what_does_the_word_ordinary_mean.pdf
    • https://uploads.strikinglycdn.com/files/4b25ab40-d2ac-4993-9546-80d78a503be0/how_to_reuse_3m_command_strips.pdf
    • https://uploads.strikinglycdn.com/files/fcd9a0c9-c3ff-4b80-a946-6bc35e6d8ec9/vaxinurob.pdf
    • https://69868269-04aa-4a0d-8379-1371762fd556.filesusr.com/ugd/d8beff_5aee3f8b4aef4a6fa8eadd47786f263d.pdf?index=true
    • https://uploads.strikinglycdn.com/files/d60b3e94-83e0-4339-82b5-4d73c006d62b/how_do_you_use_the_mercedes_rear_entertainment_system.pdf
    • http://perinuve.epizy.com/craftsman_2-cycle_mini-tiller__cultivator.pdf
    • https://uploads.strikinglycdn.com/files/c7c7ea47-7506-4af0-a6d5-5ac1f4b72af4/54094227968.pdf
    • https://uploads.strikinglycdn.com/files/25b885b6-094a-43ab-a2f1-04cfe263ea57/70778006066.pdf
    • https://uploads.strikinglycdn.com/files/70871d56-2325-4ec5-bf98-3fe5c099f705/el_arte_de_amarte_por_nappa.pdf
    • https://uploads.strikinglycdn.com/files/2188bd47-b287-4202-91dd-e3ba37ad7267/the_monk_who_sold_his_ferrari.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_off0000f809.bin
97a70341739d9521352be0c9502b88f42198b7d6db7b94f36356305acd818dc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF809 5408 bytes
font_01_sfnt_off00010a72.bin
351257122c5e9ed12a70e2f2be994f33c8c583bb6d33b2f1942d595b7e800dd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A72 11968 bytes

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