Malicious PDF — malware analysis report

Static analysis result for SHA-256 2debce0b652e1bfe…

MALICIOUS

PDF

81.7 KB Created: 2021-03-25 13:37:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ef8ba2f59352f317ac950b544efa855 SHA-1: dbf96a5a2cbd4562cfef07b4ea41cd7b6778ad13 SHA-256: 2debce0b652e1bfe2c08f510357a4f2f65382fe7f1330d99c160d8cecb204b59
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a large number of external links, many pointing to suspicious domains, suggesting a link farm or phishing attempt. The document body, though heavily obfuscated, appears to be a lure related to industrial boilers, likely to attract traffic or trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://resalured.ru/award?keyword=como+funciona+una+caldera+industrial+pdf
    • https://jovonawokemurif.weebly.com/uploads/1/3/4/6/134678447/0fb973a517.pdf
    • http://sawedes.mywebcommunity.org/zomosizimupitezirura.pdf
    • http://robertferrell.net/96113769740ywsgs.pdf
    • http://ubsvp.com/266602018337e42m.pdf
    • https://buwinejelajok.weebly.com/uploads/1/3/4/0/134018081/3670618.pdf
    • http://gaydating.world/78300388746q6dwh.pdf
    • http://nigasheff.xyz/leyenda_de_las_estrellasn20aj.pdf
    • https://finoritibad.weebly.com/uploads/1/3/4/4/134468058/f9cd13bb5f27.pdf
    • http://sifisomatexow.sportsontheweb.net/how_to_make_a_boy_fall_for_you_online.pdf
    • https://jabenawonidibe.weebly.com/uploads/1/3/5/3/135385032/terejelatava.pdf
    • https://wamukefak.weebly.com/uploads/1/3/5/3/135324497/df3109609219e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pobixedele/concho_resources_annual_report.pdf
    • https://s3.amazonaws.com/vavapekadoliti/84187159925.pdf
    • https://s3.amazonaws.com/juvetaso/sbs_food_network_tv_guide_qld.pdf
    • https://s3.amazonaws.com/devuxuzejozam/presidential_and_parliamentary_system_of_government.pdf
    • https://s3.amazonaws.com/retisovojor/wojoke.pdf
    • https://s3.amazonaws.com/genedesowul/cartoon_baby_car_free.pdf
    • https://s3.amazonaws.com/sazixipame/is_there_any_prep_for_an_echo.pdf
    • https://s3.amazonaws.com/gogoxowiniza/how_do_i_enable_hr_on_my_fitbit_inspire_2.pdf
    • https://s3.amazonaws.com/rirusozo/lirojukisojerebonofona.pdf
    • https://s3.amazonaws.com/kovilowab/which_version_of_the_bible_for_beginners.pdf
    • https://s3.amazonaws.com/dewutexorob/best_apk_to_watch_anime_free.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_off0000fd23.bin
b34c6f27f29a50f4fc3e653a52aaa1bc68f4d504edf40ebb69154f58c5b4eee3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD23 5208 bytes
font_01_sfnt_off00010ebb.bin
578fda42bbb2dc6ac1e3dc41f86b05c631b7a89223e8023a5669fe827787e858		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10EBB 12408 bytes

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