Malicious PDF — malware analysis report

Static analysis result for SHA-256 7387927d8522c3a3…

MALICIOUS

PDF

80.5 KB Created: 2021-03-24 02:59:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 089033487fde59ddf1817192f3bbbbab SHA-1: beb2de9df3028444b976b2ed041ca6cef26e1f7d SHA-256: 7387927d8522c3a3739cca5dfe33a61aedaa136954b2462a7ea4f7da71f78897
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics, including a critical finding for a PDF link farm and ML classification indicating maliciousness. The document body, though heavily obfuscated, suggests a lure related to PDF tools. The presence of numerous external URLs, particularly those within a link farm, indicates an attempt to redirect users to malicious sites for further exploitation or payload delivery. The ClamAV detection further confirms its malicious nature, likely as a phishing or trojan distribution mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://lozipotod.ru/award?keyword=pdf+split+and+merge+download+free PDF link annotation
    • https://widalafamibag.weebly.com/uploads/1/3/0/8/130814492/tovawaketenezof.pdfIn PDF document text
    • https://tifomuzaki.weebly.com/uploads/1/3/1/1/131163977/lalol.pdfIn PDF document text
    • http://zipafaxelati.sportsontheweb.net/22478094146.pdfIn PDF document text
    • http://viteroludobano.mypressonline.com/fevuvawixofomuwag.pdfIn PDF document text
    • https://jumaxejew.weebly.com/uploads/1/3/1/6/131606465/58eb2de9e.pdfIn PDF document text
    • http://xelowonol.scienceontheweb.net/movazotuzogolonifoli.pdfIn PDF document text
    • https://tetuxexe.weebly.com/uploads/1/3/1/8/131871535/7150630.pdfIn PDF document text
    • https://bipesulevawitod.weebly.com/uploads/1/3/1/4/131437914/migelegavilo-bepitulaxij-pebumalarir.pdfIn PDF document text
    • https://zoxexakaxikat.weebly.com/uploads/1/3/0/7/130739387/piwefiz.pdfIn PDF document text
    • http://tareworig.mywebcommunity.org/lebativowewexaxokifegilu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d2fe923-a7cc-4cdc-8e45-c3ed05e840ab/the_pigman_audiobook_chapter_5.pdfIn PDF document text
    • https://s3.amazonaws.com/nojemi/sutton_engineers_black_book.pdfIn PDF document text
    • https://s3.amazonaws.com/wupuxus/30_day_notice_to_end_tenancy_template.pdfIn PDF document text
    • https://s3.amazonaws.com/fexuror/pearson_prentice_hall_algebra_1_textbook.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/notification_code_android_studio.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/pusisitezut.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/vizio_29_sound_bar_2._0_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/91354530592.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/gekiligezigabame.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd3d3247-7f0a-44f5-8864-47ad1c289bf4/rebuta.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/muribafudopajowa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3a008dd-cf26-4e89-85af-3aa35246b6d8/ruramunodisifam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f17b314-5eed-4315-b1c7-c5f965437ef7/example_of_descriptive_essay_about_a_place_in_philippines.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f13d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF13D 5456 bytes
SHA-256: 2b485b72a243bd1f7ac8e04f82ee893c59d1d271b83556ddab621e1556e7721c
font_01_sfnt_off000103cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103CB 20660 bytes
SHA-256: ef10953dc854a760b38f76ced4dd18d28c479920da88199e35e10424b49c9997

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