Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b21a0bb0ee64001…

MALICIOUS

PDF

78.3 KB Created: 2021-03-24 00:06:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ea54500b9a6f18963d47075ccd5cb7f1 SHA-1: 5c204ebe15e340e0aa72a1af1b66e86d4978e066 SHA-256: 1b21a0bb0ee6400157d6979e086498ad5e647f181ef2193ef6e8668a300287ef
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate maliciousness. While no scripts were explicitly extracted, the nature of the link farm and the presence of external URLs point towards a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://botokaw.ru/123?utm_term=a+good+will+hunting+full+movie
    • https://cdn.sqhk.co/xovinexesun/aXjjDUV/lock_screen_picture_location_windows_10_registry.pdf
    • http://sweetmeet.online/tezifometemfmtu.pdf
    • http://wijasagasipode.getenjoyment.net/breadman_ultimate_instructions.pdf
    • https://sopaxibifezubin.weebly.com/uploads/1/3/4/6/134608036/nifid.pdf
    • https://cdn.sqhk.co/lemisobe/8chfp7g/heroes_of_alternate_match_3_rpg.pdf
    • http://korixoludofuguk.scienceontheweb.net/27036949245.pdf
    • https://cdn.sqhk.co/suxevevagova/gDP8zUm/39518046009.pdf
    • https://cdn.sqhk.co/jivaduzar/a282Hhi/73230963825.pdf
    • http://xegazinijitup.mywebcommunity.org/diary_of_a_wimpy_kid_old_school_full_book_free.pdf
    • http://lnstagram-help-businesss.com/242117759160p6pr.pdf
    • https://cdn.sqhk.co/jasolizilaf/fgcjcqs/architect_data_free.pdf
    • https://nakusiwikabudu.weebly.com/uploads/1/3/4/9/134904560/lobuvojasorugupogugo.pdf
    • https://segapokepex.weebly.com/uploads/1/3/4/6/134649200/rufonenixaxokexota.pdf
    • http://worldthailand.fun/karaoke_vanbasco_full_6000_cancionvcfjn.pdf
    • https://cdn.sqhk.co/suxavawudomo/hijb8ig/truck_wallpaper_android_hd_flower.pdf
    • http://sevowina.medianewsonline.com/nobone.pdf
    • https://nevozijefase.weebly.com/uploads/1/3/4/7/134748823/lewikugoza.pdf
    • https://gizalikujaxemif.weebly.com/uploads/1/3/4/6/134606641/venutapupuxavef.pdf
    • https://cdn.sqhk.co/givikofuf/gNhcgcI/61012398617.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://muwuvago.atwebpages.com/jepoxot.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_off0000f549.bin
d24c830f8475b294190a8acc765fb7dae5c6feb06785fe4d188de711d207d47a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF549 4980 bytes
font_01_sfnt_off00010632.bin
48c41e97e91bcf3c0be3225f3d8d7777133934a319c0c82db61dd9f4dce7f59d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10632 11428 bytes

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