Malicious PDF — malware analysis report

Static analysis result for SHA-256 dde60c2ffbf2f375…

MALICIOUS

PDF

68.0 KB Created: 2021-06-06 03:06:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ce032c90374af5f7c3df50ef50b0df3 SHA-1: 2ccd4c34903779d1cb454f7b9f397028356b72cd SHA-256: dde60c2ffbf2f375dbdefcfee31fa3f9638c2ee21148926a364fc464c2e78b62
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicated a high probability of maliciousness. The PDF contains a large number of external links, with the primary suspicious URL being https://queure.ru/pbw. This suggests the document is designed to redirect users to potentially harmful websites, possibly for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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-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://queure.ru/pbw?utm_term=how+to+use+socket+wrench+with+drill
    • https://titevajap.weebly.com/uploads/1/3/2/7/132741099/tebisojimavon.pdf
    • https://foregizof.weebly.com/uploads/1/3/4/8/134890581/3924455.pdf
    • https://jedirixaz.weebly.com/uploads/1/3/4/8/134875163/7adb2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://mifimoruzuwo.pbworks.com/f/pokemon_dark_rising_2_gba_rom_hack_download.pdf
    • https://uploads.strikinglycdn.com/files/c1386024-4909-49f7-877f-ff3be58afd80/ginenupofikudusoz.pdf
    • http://pezeliv.pbworks.com/f/mckenzie_technique_for_herniated_disc.pdf
    • http://kusarolox.pbworks.com/w/file/fetch/144577593/walidunixajeto.pdf
    • http://namikikis.pbworks.com/f/gastritis_diet_chart_in_hindi.pdf
    • http://rupebaxo.pbworks.com/w/file/fetch/144496569/cover_letter_for_any_job_opening_sample.pdf
    • http://bavudexote.pbworks.com/f/89591374226.pdf
    • http://jebusolole.pbworks.com/w/file/fetch/144687477/jofevesomosawutagezafoz.pdf
    • https://uploads.strikinglycdn.com/files/e788b452-4803-4a40-929a-014cd929ea77/what_is_the_coldest_setting_on_an_insignia_mini_fridge.pdf
    • https://uploads.strikinglycdn.com/files/70296bd5-386d-425f-b704-504d346f6bca/xutatapupuzaferukukuki.pdf
    • https://uploads.strikinglycdn.com/files/ae49abfc-5d3f-459f-a782-cc1e36d1ce88/90645384568.pdf
    • https://uploads.strikinglycdn.com/files/11d7de40-9115-447d-8e58-381cbcd6bb10/15848675010.pdf
    • https://uploads.strikinglycdn.com/files/8c88cda2-f437-40ec-9a77-bdecc7a2ee3a/my_oven_doesnt_work_but_the_burners_do.pdf
    • https://uploads.strikinglycdn.com/files/00ef9e90-954b-4131-b70d-aa2f59189f76/pavufuwojenurol.pdf
    • http://detomipipu.pbworks.com/f/what_does_a_presupposition_mean.pdf
    • https://uploads.strikinglycdn.com/files/7e7642ac-6546-4741-8ecd-05a0f4b2f5f9/wuzok.pdf
    • http://mepijewaj.pbworks.com/w/file/fetch/144568644/how_to_use_lg_ac_remote_control.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_off0000ccbe.bin
696a50cf564d2dcd67a14a34af457ec6a120d3f8eae8aaf9428f2bb595f19ad5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCCBE 4936 bytes
font_01_sfnt_off0000dd92.bin
025a789b498b044eff26163f548144d98788f7148f0c222d82828d8e7a660260		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD92 11676 bytes

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