Malicious PDF — malware analysis report

Static analysis result for SHA-256 14e3733744d9c05b…

MALICIOUS

PDF

88.6 KB Created: 2021-01-25 08:31:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 5ca8796a34460f6d4740f837d9d916d3 SHA-1: 532b4bd0d7f6b33c99e4d6f3be30a134bebf0a13 SHA-256: 14e3733744d9c05bac2eceb21e482b55eaf9366086383d045baf27d809b7c962
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high probability of malicious intent. The heuristic 'PDF_SEO_LINK_FARM' indicates the presence of numerous external links, with 'http://palalujopaxuv.epizy.com/66390294852.pdf' being the first identified. The embedded URL 'https://maypoin.ru/123?utm_term=f+sharp+major+key+signature+treble+clef' also suggests a phishing or spamming attempt. No scripts were extracted, but the overall structure points to a malicious document designed to redirect users.

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
  • 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.
  • 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://maypoin.ru/123?utm_term=f+sharp+major+key+signature+treble+clef PDF link annotation
    • https://tadesurirow.weebly.com/uploads/1/3/2/7/132711952/mesare.pdfIn PDF document text
    • https://xabesokexiba.weebly.com/uploads/1/3/4/3/134327988/32a12410392f.pdfIn PDF document text
    • https://garegijewavib.weebly.com/uploads/1/3/4/3/134389285/wovovokebepazapegiri.pdfIn PDF document text
    • https://buxudirikebipur.weebly.com/uploads/1/3/1/1/131164004/rivemajatedat.pdfIn PDF document text
    • http://felidefewipikig.22web.org/zuvefufes.pdfIn PDF document text
    • https://cdn.sqhk.co/zexoribuj/gdPxKhf/dusttale_sans_wallpaper.pdfIn PDF document text
    • http://fawetugamuxix.66ghz.com/76071581529.pdfIn PDF document text
    • https://jurujixomegisi.weebly.com/uploads/1/3/4/7/134745805/9796bb1eff428f.pdfIn PDF document text
    • https://cdn.sqhk.co/mukujoripu/gg4ijji/cubie_jump_tap_dashboard.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://palalujopaxuv.epizy.com/66390294852.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/kumikivokuzirasiv.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/80162026988.pdfIn PDF document text
    • https://s3.amazonaws.com/wajibile/goxumojiletulixu.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/pelotunipukow.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/tivuxalolevapuzigotimum.pdfIn PDF document text
    • http://xilibosukotijob.epizy.com/gezutubiwot.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_off00010588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10588 5768 bytes
SHA-256: 5ac93a445276b4875d36798f7d73b2f4ed8a232787b7634d7f874b13e6361826
font_01_sfnt_off00011911.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11911 11304 bytes
SHA-256: 17168c34f7fa0070365ea99c4a012c28fec6665919fa415d921ef60e2ce3ec8c
font_02_sfnt_off00013f3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F3D 16200 bytes
SHA-256: b2f1af8d3c6c584ad6ab612038e42d95c20c66029f3ae806de29efdd7ffc45f6

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