Malicious PDF — malware analysis report

Static analysis result for SHA-256 d165a8e1b4676073…

MALICIOUS

PDF

78.1 KB Created: 2021-04-05 04:15:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f97916702167c2a4a621fc235c06cd94 SHA-1: da18a991809982b4fb8f42ba16598c569e3d4b7a SHA-256: d165a8e1b46760732f72a060de33cac7e5c0930d13c46f82ebc9c6d889a2c725
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://maypoin.ru/123?utm_term=live+traffic+report+m1+gold+coast PDF link annotation
    • http://naykaryadom.fun/net_speed_limiter_for_androidna2o1.pdfIn PDF document text
    • http://birjand.design/ridax5xjag.pdfIn PDF document text
    • https://cdn.sqhk.co/wubumeze/SiczVHV/63499992225.pdfIn PDF document text
    • http://wamuwosola.mygamesonline.org/mla_cite_article.pdfIn PDF document text
    • http://construt.site/what_happens_in_city_of_lost_soulszvgdf.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvitatutuv/eiieeif/top_viral_videos_this_week_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/xuteposidobi/hfwhegf/the_edge_of_democracy_movie_trailer.pdfIn PDF document text
    • http://fipagolanikobax.mygamesonline.org/35661091335.pdfIn PDF document text
    • https://cdn.sqhk.co/bujavenizake/jgIhgja/74624026509.pdfIn PDF document text
    • http://yandex-delivery.cc/free_xvideo_net2g9wv.pdfIn PDF document text
    • http://gayerkan.com/red_spots_on_skin_burning_sensationykxh5.pdfIn PDF document text
    • http://kewokuxumuzig.medianewsonline.com/35597740235.pdfIn PDF document text
    • https://cdn.sqhk.co/fojufifef/iajft5P/tamil_dubbed_romantic_movies_in_tamilrockers.pdfIn PDF document text
    • http://jabewes.medianewsonline.com/how_to_determine_shotgun_shot_size.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tutasujal/zalazomavesixaluzuvefu.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/entropia_universe_starter_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/toniseligiwuzux/sjcam_sj4000_manual.pdfIn PDF document text
    • https://877305ac-a74e-4e93-918f-f866ec7622df.filesusr.com/ugd/0dac30_965f01a1a61d434da6edad1aae706c1f.pdf?index=trueIn PDF document text
    • https://204833c8-abda-4421-8777-5048ee7dd919.filesusr.com/ugd/e30b7a_42fcbbcd6d03483e955db883229d0867.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/satulibaren/brynmawr_school_uniform.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/chinese_textbook_rewrites_bible.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/dota_auto_chess_mobile.pdfIn PDF document text
    • http://megugasawixige.onlinewebshop.net/2911022783.pdfIn PDF document text
    • https://ca3ec1ac-6ff7-4c8f-ae0f-86a30d86e335.filesusr.com/ugd/3615fb_52bed6186a6d400788524c9f1c956480.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/mastoiditis_tratamiento_pediatria.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A3 5528 bytes
SHA-256: 5c9adad8e5fb9bd3ca2308f9745eca6623436a3cf0e2f30a06c217527acd524b
font_01_sfnt_off0001056f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1056F 10804 bytes
SHA-256: ef82a82113377a87fc833385bdc1b08f152faf437bf03bba0f13ffb9cfb172aa

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