Malicious PDF — malware analysis report

Static analysis result for SHA-256 2270609d0f96ca46…

MALICIOUS

PDF

95.2 KB Created: 2021-03-20 01:46:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b2ce784fd00c78a632c9fc1315cd733 SHA-1: 7075b4d60242d1197f774efa85c6497265cb0e84 SHA-256: 2270609d0f96ca463a4aca47d7e3e14abf743de3fdd3122c74f2d084922f96fc
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a large number of external links, suggesting it is part of a link farm or phishing campaign. The embedded document body, though heavily obfuscated, contains text related to 'public administration' and 'pdf', likely intended as a lure. No scripts were extracted, but the presence of numerous external URLs indicates a redirection or download attempt.

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://kuzutuzo.ru/award?keyword=administra%25C3%25A7%25C3%25A3o+p%25C3%25BAblica+gerencial+pdf
    • https://cdn.sqhk.co/lapitobexeva/YhK99gh/famous_british_rock_bands_90s.pdf
    • https://suvedezu.weebly.com/uploads/1/3/1/3/131379937/dokeluxixar.pdf
    • https://cdn.sqhk.co/pelotuwew/ghichhW/alan_walker_alone_song_ringtone_mp3_download.pdf
    • http://girlita.space/rebels_and_redcoats_documentarywv7a5.pdf
    • https://petirinupupa.weebly.com/uploads/1/3/1/4/131438611/wugilezapabaza.pdf
    • https://cdn.sqhk.co/lumolixuwo/IjeiggM/smart_charger_battery_charger.pdf
    • http://avto-trokot.xyz/family_feud_live_play_with_friendsgakac.pdf
    • https://cdn.sqhk.co/rapigufagi/TOjbifx/private_number_caller_id_android.pdf
    • https://wavogovarixu.weebly.com/uploads/1/3/1/3/131379914/52cdd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://2863666b-9d79-467d-9aad-9eeb6dafbdf2.filesusr.com/ugd/6ee3eb_dc037879f7504c9485ea70e8beed771c.pdf?index=true
    • https://d67926d6-99fe-48a4-938f-95006fdf2de6.filesusr.com/ugd/21d82e_c5d62e5241034c358305e5b1765a785f.pdf?index=true
    • https://s3.amazonaws.com/rodigapigeta/button_submits_form_by_default.pdf
    • https://3fb740b9-71d8-4183-8edb-de11b68c0a29.filesusr.com/ugd/1fbf8b_2c716706f4f949d080c06c52e363f001.pdf?index=true
    • https://3745348a-78a0-42d7-8ff4-af2b45bf5faf.filesusr.com/ugd/02631b_91369e25b9514ccf8895b121ccba56ef.pdf?index=true
    • https://s3.amazonaws.com/dejazuvorira/rigejekagovi.pdf
    • https://7c5e2310-e79b-429e-9f4a-70471a43dcce.filesusr.com/ugd/8ec1ef_e968400a6e924064a23cf2f67d4ef09f.pdf?index=true
    • https://48b7024d-7414-4593-b44d-ed892b96ad15.filesusr.com/ugd/3e5db3_09a77458c2394450ac0c7d0b868c3100.pdf?index=true
    • https://7afcd0b8-98df-42a4-afe0-9544d44c9539.filesusr.com/ugd/74e9cf_5bb806c95d7c41f9b6cd4e4ececbb4cb.pdf?index=true
    • https://cf21b241-1edd-4e7a-8b85-4b7fa12bec5a.filesusr.com/ugd/835652_899397184329495f9bad433c3cc34094.pdf?index=true
    • https://a86a6b26-b473-4b55-b9aa-7628a2bff077.filesusr.com/ugd/4f270c_879fe664784348188b631660f3f77322.pdf?index=true
    • https://493f174a-a540-412c-bacb-e5b7b26cbfcf.filesusr.com/ugd/95bb70_e56723c178b64f5dbc889c95408d8d51.pdf?index=true
    • 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_off00013064.bin
7be14165fe4a48d2d6cb56008831a0ca2d066883b56c15b34348d1c9300b1a63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13064 6220 bytes
font_01_sfnt_off00014467.bin
b3312f4bdc25face7dbf1046e18acdbc8d1fb5c57134f59c2dd9c6ae82df060d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14467 13560 bytes

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