Malicious PDF — malware analysis report

Static analysis result for SHA-256 d76d0e56526a70f4…

MALICIOUS

PDF

92.4 KB Created: 2021-02-21 12:24:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: f6ac941745bc5f533cc9378b20859307 SHA-1: cf91e638723fd399389d2d4676c737ff5ff24e40 SHA-256: d76d0e56526a70f4b9888482c3a07f1ec8d1fbd02ed9f951eca7953e0805431f
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to redirector infrastructure and potentially malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains text that appears to be a deceptive error message, further supporting the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/strik?utm_term=maxiscan+ms300+says+link+error In PDF document text
    • https://cdn.sqhk.co/mofijovelu/dY1CJs6/religitisu.pdfIn PDF document text
    • https://cdn.sqhk.co/mowukirew/ibha3gf/35538527431.pdfIn PDF document text
    • http://investorlands.ru/ruxasorogafk61k5.pdfIn PDF document text
    • https://diwowure.weebly.com/uploads/1/3/4/5/134592565/bawov_zegulifo_xozakigaparij.pdfIn PDF document text
    • https://cdn.sqhk.co/vunebapenuj/Sid2gda/zojubudunizem.pdfIn PDF document text
    • http://moneymaya.site/color_my_world_chicago_flute_sheet_musicogyp2.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuvezosapa/jgrACie/simple_literature_essay.pdfIn PDF document text
    • https://cdn.sqhk.co/lupobikud/RiceJja/kafesoxilotalixipitotojuf.pdfIn PDF document text
    • https://cdn.sqhk.co/pojimisuso/JifyN8G/nezawezad.pdfIn PDF document text
    • https://cdn.sqhk.co/kufedefivuvu/ePNijgg/91437166486.pdfIn PDF document text
    • https://cdn.sqhk.co/felebamifuk/i3Mijcq/digipay_3._2_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/josedinis/asM36eu/52576557619.pdfIn PDF document text
    • http://auto-agents.space/malachi_z_yorkw4woq.pdfIn PDF document text
    • https://cdn.sqhk.co/dalubevemex/ibsAfW3/lords_mobile_battle_of_the_empires_strategy.pdfIn PDF document text
    • https://cdn.sqhk.co/kinifukix/hdYzLmP/bokejotitaxatijobofob.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vutevesofu.rf.gd/nonconformist_crossword_puzzle_answer.pdfIn PDF document text
    • http://jirizaxewusi.epizy.com/zamojuwapojab.pdfIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001104a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1104A 5488 bytes
SHA-256: a29296e21553d257fdce73f3e997866fb868f2f40a798fc6ce7ef6d171209ca2
font_01_sfnt_off000122f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122F6 12592 bytes
SHA-256: 398fe05b949edcb5ea225f4de08f94d6fc3a4eb0e3d7e7934d77e5e49dc3fb1c
font_02_sfnt_off00014d67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D67 16192 bytes
SHA-256: 9c7926b8929b88a1dffb52ec04bcfb477868fd459509337312ce674bafabbb6a

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