Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d94324b698f00dd…

MALICIOUS

PDF

67.2 KB Created: 2021-02-18 11:41:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: d1242ea30cfa3d7aaaed37a5064c05a6 SHA-1: 15af18e8d6b474facabd2b1caccdae0b8a25aadb SHA-256: 4d94324b698f00dda97353e8810493e74bdb6866dd76f2aa433412d250b12a40
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many hosted on disposable domains, indicating a link farm or phishing operation. The 'Solutionreach sync launcher' text suggests a lure to trick users into visiting malicious sites. ClamAV and ML classifiers confirm its malicious nature, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://druttle.ru/123?utm_term=solutionreach+sync+launcher PDF link annotation
    • https://pebabozepevi.weebly.com/uploads/1/3/5/9/135966679/3145497.pdfIn PDF document text
    • https://ripapexogona.weebly.com/uploads/1/3/0/8/130874469/1eea27a.pdfIn PDF document text
    • https://nobopejulalajib.weebly.com/uploads/1/3/4/6/134621416/dilogegu-fusemu-sokulikirofove.pdfIn PDF document text
    • https://cdn.sqhk.co/seworani/nqgchex/snake_xenzia_game_online_play_free.pdfIn PDF document text
    • https://cdn.sqhk.co/miloxuso/hdGhaif/xasemefepesu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405904/normal_5fd2c0fd16b6d.pdfIn PDF document text
    • https://cdn.sqhk.co/buvaboda/51cicif/xedofibidipaxik.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491945/normal_60074e592bc76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4504839/normal_6009b8dc7d540.pdfIn PDF document text
    • https://wisolowiguwo.weebly.com/uploads/1/3/4/6/134630140/lofasupojopu.pdfIn PDF document text
    • https://remoruputudedux.weebly.com/uploads/1/3/4/0/134017090/bumanotu.pdfIn PDF document text
    • https://rizipopene.weebly.com/uploads/1/3/5/3/135316145/8624d.pdfIn PDF document text
    • https://cdn.sqhk.co/mekaxosur/Theiehj/3d_origami_swan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/tropico_5_android_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/sefelidibogataz.pdfIn PDF document text
    • https://s3.amazonaws.com/futamo/24190954761.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/75965065762.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/bleacher_report_philly_eagles.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_off0000caab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAAB 5092 bytes
SHA-256: 993206633a9ca73277b22526fe1288558d40f22587c587b14985a529419035f9
font_01_sfnt_off0000dbf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF7 10548 bytes
SHA-256: 6e9cd6b2e21a3fb7425e61d0efe4873838573b9ee33df579dea2c577127c8269

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