Malicious PDF — malware analysis report

Static analysis result for SHA-256 260dedc1503cf795…

MALICIOUS

PDF

75.2 KB Created: 2021-04-02 07:28:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: dbb7e780a9157333d75f83099a605632 SHA-1: 4c823ae3bc5eff2f7be78299271af2ee5022283b SHA-256: 260dedc1503cf79598e76163e09277e44251115c173c03fbf92ce64f20a6ac96
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains multiple embedded URLs, with at least one, 'https://ponafet.ru/wix?keyword=sparta+and+athens+worksheet+answers', appearing to be part of a link farm designed to redirect users. The document body, though heavily obfuscated, suggests a lure related to 'Sparta and athens worksheet answers', which is a common tactic for phishing or malware distribution.

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 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://ponafet.ru/wix?keyword=sparta+and+athens+worksheet+answers PDF link annotation
    • https://cdn.sqhk.co/livixugakuf/Ivjatia/stickman_and_gun2_uptodown.pdfIn PDF document text
    • https://cdn.sqhk.co/verexumifo/io1geig/3d_ultra_minigolf_adventures_2_ps4.pdfIn PDF document text
    • https://guvoxokogavi.weebly.com/uploads/1/3/4/3/134374443/tapejibegadivimujug.pdfIn PDF document text
    • https://kibodoru.weebly.com/uploads/1/3/2/6/132695707/tuwakegizeseva.pdfIn PDF document text
    • http://litvinenko.xyz/best_free_wordpress_themes_for_blogs_and_ecommercexijce.pdfIn PDF document text
    • http://winnerslm.space/2216236123y8zdp.pdfIn PDF document text
    • https://cdn.sqhk.co/wimiwupo/lImKjfC/smashing_rush_mod_apk_1._6._90.pdfIn PDF document text
    • https://cdn.sqhk.co/sozaxejiv/jcNJjho/17092766479.pdfIn PDF document text
    • https://bawozumop.weebly.com/uploads/1/3/1/4/131452782/1582752.pdfIn PDF document text
    • https://cdn.sqhk.co/madufuxenuw/iifjh5K/oscar_de_la_hoya_wife_photos.pdfIn PDF document text
    • http://slmit.fun/lenovo_thinkpad_t420_car_chargerfg2am.pdfIn PDF document text
    • http://romeoplanet.club/19267635149d1mo7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://60b161a2-b511-46bc-b48c-7ca4331f2db3.filesusr.com/ugd/34b71b_7d588e788dca4cb49e97b5f84d924d28.pdf?index=trueIn PDF document text
    • https://f33eab34-52c4-4f1b-91c9-7c5ec1255b8f.filesusr.com/ugd/9d0374_8220aa07e24c4a7493e8b24634ac8b2c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/piradi/54496193064.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/fresh_off_the_boat_restaurant_orange_beach_menu.pdfIn PDF document text
    • https://510adc33-753b-44c0-977e-8d34da8fcdd4.filesusr.com/ugd/5f4192_bb43a1c642d34fd0bddad295824f4576.pdf?index=trueIn PDF document text
    • https://9534cc33-30dc-483d-bed2-8d5691710d48.filesusr.com/ugd/3835dd_563e0891be014b0092b06d63b1cf4f40.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sinadi/gukopoxawiluwevegeko.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/49274200002.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_off0000e8d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D4 5276 bytes
SHA-256: 5df98baba697d0fa14497876ae9d7a1380ebd9e40c8c87840f8f0a0d0835a630
font_01_sfnt_off0000facb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFACB 10316 bytes
SHA-256: 65c9fc7afccf5de39a514ff9998c4f1581c85d96630b357cd72e972049251a71

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