Malicious PDF — malware analysis report

Static analysis result for SHA-256 e88f3067c13b4626…

MALICIOUS

PDF

86.8 KB Created: 2021-03-16 03:29:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 1e0cc83ca4ee7776fe1ba8db3b77f9fa SHA-1: b020f082de415e8337c7e0a290e2a66bdae474dd SHA-256: e88f3067c13b462628ac1c5528e572335965c4c1fdf0a4889efe7a768f1b0601
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, many pointing to disposable hosting, and is structured as a link farm. The document body, though heavily obfuscated, suggests a lure related to 'Starcraft 2 strategy guide'. The presence of external URIs and the link farm structure strongly suggest the intent is to redirect users to malicious websites for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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=starcraft+2+strategy+guide+terran PDF link annotation
    • https://cdn.sqhk.co/rixosadiv/e5hc6yp/ynm_weighted_blanket_vs_gravity_blanket.pdfIn PDF document text
    • https://cdn.sqhk.co/winibitorut/aJsm6ji/curriculum_guide_grade_1_english.pdfIn PDF document text
    • https://cdn.sqhk.co/romemanir/3hd902M/sirona_dental_chair_price.pdfIn PDF document text
    • https://cdn.sqhk.co/korulifesewa/dn3hdib/wozamoxemekefesunoxasete.pdfIn PDF document text
    • http://xinuvaro.sportsontheweb.net/persuasive_writing_prompts_middle_school.pdfIn PDF document text
    • http://game-pro.xyz/how_long_does_it_take_to_register_for_step_11e3l0.pdfIn PDF document text
    • http://tuwuneluzuso.22web.org/sasevudun.pdfIn PDF document text
    • http://metarapuw.mypressonline.com/weber_genesis_e_330_natural_gas_conversion_kit.pdfIn PDF document text
    • http://timinome.getenjoyment.net/zixizosureboz.pdfIn PDF document text
    • https://cdn.sqhk.co/xamowizaso/9ighbXR/ielts_speaking_task_2_topics_with_answer.pdfIn PDF document text
    • https://cdn.sqhk.co/jefapukawore/h46ePia/best_free_qr_scanner_app_for_android_2018.pdfIn PDF document text
    • http://pubomotikevetu.22web.org/76406550740.pdfIn PDF document text
    • http://jakufodunod.getenjoyment.net/coleman_powermate_3750_generator_carburetor.pdfIn PDF document text
    • http://wisitens.online/kasojemibp4y0w.pdfIn PDF document text
    • http://lexusesadedebaz.22web.org/cheer_music_maker_free.pdfIn PDF document text
    • https://cdn.sqhk.co/guposidum/jIidSeI/bizakotul.pdfIn PDF document text
    • https://cdn.sqhk.co/xamubana/7ide1Hy/8982089630.pdfIn PDF document text
    • http://duplicwcnj.space/my_riding_mower_will_not_startwwuxr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://duxejuxaxeze.epizy.com/champions_league_qualification_format.pdfIn PDF document text
    • http://gawukafiwinexi.epizy.com/linerejeduxiwiwafop.pdfIn PDF document text
    • http://gidiletejeke.epizy.com/how_is_the_climate_near_the_equator.pdfIn PDF document text
    • http://josilofogi.rf.gd/marathi_aarti_sangrah_book_free_download.pdfIn PDF document text
    • http://masifegudogona.rf.gd/makesexibexitopeje.pdfIn PDF document text
    • http://jifumoxu.rf.gd/titijulasatobefedoba.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_off00011720.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11720 5492 bytes
SHA-256: 89a182bcf392c3ae0496679f28bd0678265da98626565f6c9f17fd7b9129b11c
font_01_sfnt_off000129ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129EF 10380 bytes
SHA-256: 9dabe5fd94c246105ee01e4669e09ea9a91baef2a94e02dc25f6dfee9ad41f93

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