Malicious PDF — malware analysis report

Static analysis result for SHA-256 78dcb0ce9d8ae48c…

MALICIOUS

PDF

100.9 KB Created: 2021-03-14 12:14:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c42acf9f072d908393d1c7875e2103dd SHA-1: d08d6ef93baf856579e0a1f56acbbe98959cbe0e SHA-256: 78dcb0ce9d8ae48c87b52a3a11adbc6a96ccc406b0baa1ea75cacd46e8ce99ee
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ClamAV detection and ML classifier strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristic firings suggest the document is designed to redirect users to malicious content, potentially for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://vilenefex.ru/wix?keyword=bdo+leveling+guide+1-60
    • http://masajsalonunuz.com/female_sea_monster_namesucinq.pdf
    • http://xufededubumavif.scienceontheweb.net/gagoxupumav.pdf
    • http://kipegujodup.getenjoyment.net/23071587061.pdf
    • https://riluvozig.weebly.com/uploads/1/3/4/3/134380056/09d55.pdf
    • http://fabermanufacture.ru/61518275886geivs.pdf
    • http://laitlabs.pro/38818530036w9vka.pdf
    • https://mujunuduxur.weebly.com/uploads/1/3/5/3/135327440/vupovevinajiz.pdf
    • http://iceteas.space/cache_clear_android_widgetbbl0n.pdf
    • https://wopenugepaned.weebly.com/uploads/1/3/1/0/131069893/d16b4.pdf
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/4782375.pdf
    • http://fitukogamoj.iblogger.org/12961592915.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/5a07905b-1deb-4047-9470-f6ed21a58edf/pugevojotaponedizinit.pdf
    • http://kawerulim.onlinewebshop.net/gedidejatoka.pdf
    • http://gujimosodaza.myartsonline.com/zowaju.pdf
    • https://uploads.strikinglycdn.com/files/4e212ced-39d4-42ce-8e2a-07aea4f1ce35/avent_2_in_1_electric_steam_steriliser_reviews.pdf
    • http://ratobewiwigu.atwebpages.com/multivariate_t_distribution.pdf
    • https://uploads.strikinglycdn.com/files/243345eb-d379-4439-b25f-5661c5261dae/retirowokibato.pdf
    • http://wumugajus.onlinewebshop.net/fefanofaneg.pdf
    • http://fonenutekosut.epizy.com/gupuwifawa.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012d4b.bin
dff9d9bd78208431fc0c3dbb8fbbbaece6bfd0c8e661ebb4cec382bd295f80d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D4B 5000 bytes
font_01_sfnt_off00013e77.bin
6d2a3a16cc464ce72cf05976c7f96a31c93af2202e0dc760c37a694345e222ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13E77 1800 bytes
font_02_sfnt_off00014707.bin
7618ab93925b94f436c72c94c96fd13470687634611914beae760d07c3736675		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14707 11900 bytes
font_03_sfnt_off00016fcb.bin
b8645577c67f7a1e95796f1c87198bd22579ecb5761e847315acc0a522a76c78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16FCB 16328 bytes

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