Malicious PDF — malware analysis report

Static analysis result for SHA-256 1aa0e1bea81a0de9…

MALICIOUS

PDF

80.0 KB Created: 2021-05-13 00:19:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 90c08feb43989ae2cd3995e25b9a3999 SHA-1: 739eace98a91441b5ff58f7bce0aa409e5c2d351 SHA-256: 1aa0e1bea81a0de97635fc97a3d5f068d649cefbeb51684b40aed82c527349af
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, https://jottigo.ru/strik?utm_term=calculus+thomas+finney+solutions+9th+edition+pdf, suggests a phishing or malware distribution lure disguised as a textbook. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing attack, likely using a spearphishing attachment vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://jottigo.ru/strik?utm_term=calculus+thomas+finney+solutions+9th+edition+pdf PDF link annotation
    • http://bomaduworofa.medianewsonline.com/spatial_data_modelling_for_3d_gis.pdfIn PDF document text
    • http://loduwij.scienceontheweb.net/14336606142.pdfIn PDF document text
    • http://vijofudevadotar.mywebcommunity.org/gixamego.pdfIn PDF document text
    • http://poruzotosiku.getenjoyment.net/ceptam_7_notification.pdfIn PDF document text
    • http://jakiduve.scienceontheweb.net/adobe_acrobat_pro_2020_convert_to_word.pdfIn PDF document text
    • https://cdn.sqhk.co/kuretunaba/hqibjaZ/gafavetifetixasil.pdfIn PDF document text
    • https://cdn.sqhk.co/lerapuraroke/chah4ja/little_commander_2_mod_apk_latest_version.pdfIn PDF document text
    • https://cdn.sqhk.co/xasakeza/hiQUihg/nhl_trade_news_2020.pdfIn PDF document text
    • http://dedigevobunobe.medianewsonline.com/xibakomofun.pdfIn PDF document text
    • http://muzomabavima.medianewsonline.com/72321429351.pdfIn PDF document text
    • https://cdn.sqhk.co/telazaje/iipxhci/yakuza_4_chihiro_guide.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://8cff94d3-ecab-4ea5-ad27-d3e67d02fd32.filesusr.com/ugd/2813e2_331185f4056d4f4f912d9d218156324d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/char_broil_3_burner_grill_ignitor_replacement.pdfIn PDF document text
    • https://s3.amazonaws.com/remufuzu/19625172483.pdfIn PDF document text
    • https://700ceb37-22d2-47c5-9888-d858af679aee.filesusr.com/ugd/c345b0_069f5196951d4bdda03a1cd5746fddf5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lefemijip/nimojopo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08bb7ccf-2218-443e-a26a-029dedd21cec/how_to_balance_lg_front_load_washer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4dd8cbd4-b7c1-4ed0-a879-bc8c7e0ca63c/wenejevefesovujak.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/39768809608.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eadf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEADF 5464 bytes
SHA-256: 79158bca4a9459eb8d27001e590f55147975eaab678181dbe9a73ea783e1958a
font_01_sfnt_off0000fd5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD5A 11496 bytes
SHA-256: 8b86f938cf76b31f952e7862c066a255f758d7dd3968eca389237fa4ecac6feb
font_02_sfnt_off000124ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124AC 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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