Malicious PDF — malware analysis report

Static analysis result for SHA-256 a30d9dab4bb49dbf…

MALICIOUS

PDF

82.6 KB Created: 2021-03-15 08:49:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 09e38536f1acbf20efe22043c56f4f77 SHA-1: 1f9d815aa35a926641b718aae3ffc6b6b8c37488 SHA-256: a30d9dab4bb49dbf6257a9c59312907be8b67baf8eead4a78f215d9ba167969d
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. ClamAV and ML classifiers strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to 'Apache spark tutorial pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mezovuduw.ru/award?keyword=apache+spark+tutorial+pdf
    • https://cdn-cms.f-static.net/uploads/4369168/normal_5fd7d296ee9d9.pdf
    • https://cdn-cms.f-static.net/uploads/4376379/normal_6041e44a4b6bb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/7cae0d9e-d96c-4087-b823-e35f139859aa/doraemon_movie_stand_by_me_2_trailer.pdf
    • https://s3.amazonaws.com/bokofapig/wordpress_blog_themes_free_responsive.pdf
    • https://s3.amazonaws.com/zozofufulolig/27507969357.pdf
    • https://uploads.strikinglycdn.com/files/7d313a25-1310-4869-9b32-5e142d71ea5d/2331319447.pdf
    • https://s3.amazonaws.com/warapagefasovi/amu_b_tech_online_form_2019.pdf
    • https://uploads.strikinglycdn.com/files/c2b6861c-769b-4282-b756-774bdf00dfcf/jolesidesonet.pdf
    • https://uploads.strikinglycdn.com/files/4c0638ba-9926-4790-8448-7af438e83f5b/41189642131.pdf
    • https://uploads.strikinglycdn.com/files/e8881606-9b23-4dec-b77a-62efff9a2bd5/wolfgang_puck_mini_rice_cooker_manual.pdf
    • https://s3.amazonaws.com/vabedafozo/how_do_i_enable_screen_mirroring_on_my_roku.pdf
    • https://uploads.strikinglycdn.com/files/1e25e7a7-1078-4f3a-92ed-57eff1cfa9b8/vubuto.pdf
    • https://s3.amazonaws.com/sivanira/15359006442.pdf
    • https://s3.amazonaws.com/lanaladu/17832703456.pdf
    • https://uploads.strikinglycdn.com/files/cd929413-f77d-4aa8-bf8c-87c60713d070/what_naturally_kills_parasites.pdf
    • https://s3.amazonaws.com/numunenoji/39272094775.pdf
    • https://s3.amazonaws.com/wajufifenoxuj/ginagikuzururonitub.pdf
    • https://uploads.strikinglycdn.com/files/f91c9617-7f73-4172-acfd-61a73e393f33/tixomazitujugogik.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000101cd.bin
a669bc1af61d7fb4fd28f42295b831410e6e1e4de18efabcff5b4d62ab16f56b
pdf-font-stream PDF embedded font (sfnt) at offset 0x101CD 5296 bytes
font_01_sfnt_off000113c3.bin
95cce1ead5e97ef1020762fe1da29c51cc58f8d1302fc46b0e06ea78a9f7f376
pdf-font-stream PDF embedded font (sfnt) at offset 0x113C3 12468 bytes