Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2f893d836a5c021…

MALICIOUS

PDF

69.1 KB Created: 2021-04-11 07:10:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ff125fab55f1b61d77e382ade53eb447 SHA-1: 53a32fa631e244115381da7dab480f94994d1821 SHA-256: c2f893d836a5c0217916c1c3baf903a651bb1315094490866401263b5bec7cf2
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jottigo.ru/strik?utm_term=yaesu+ftm-100dr+for+sale PDF link annotation
    • https://cdn.sqhk.co/nubowolimit/jdFWhei/american_cruise_lines_com_reviews.pdfIn PDF document text
    • https://rukadewij.weebly.com/uploads/1/3/4/0/134012321/133665.pdfIn PDF document text
    • https://nigelatadumave.weebly.com/uploads/1/3/4/6/134615228/7992621.pdfIn PDF document text
    • https://guridawado.weebly.com/uploads/1/3/4/5/134578433/3636035.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416493/normal_601f45ccb57fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408709/normal_5fc5aa9a0aa97.pdfIn PDF document text
    • https://cdn.sqhk.co/bemaxopig/8geVibI/monkey_boxing_mod_apk_apkpure.pdfIn PDF document text
    • https://cdn.sqhk.co/nufesewepi/hRigt2e/83320699153.pdfIn PDF document text
    • https://vevuwameran.weebly.com/uploads/1/3/0/9/130969214/654b8a3b01.pdfIn PDF document text
    • https://cdn.sqhk.co/fularulojoze/b3wjejg/1937140342.pdfIn PDF document text
    • https://xukanimuwuvam.weebly.com/uploads/1/3/2/6/132696198/betifaxes_mojat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403537/normal_6037e54fb4ab0.pdfIn PDF document text
    • https://cdn.sqhk.co/jipogidara/jvULhbO/shortcuts_twitter_video.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475872/normal_60294f3a9aab8.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/regufojalojaza/27938402930.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/50853456486.pdfIn PDF document text
    • https://s3.amazonaws.com/wudibirewuduto/centesimus_annus_juan_pablo_ii.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/viper_5701_compatible_remotes.pdfIn PDF document text
    • https://s3.amazonaws.com/tomaxade/google_image_search_mobile_android.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/24080161527.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/factoring_trinomials_worksheet_a_1.pdfIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/what_is_literature_definition_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/pevarijidasalop/japosevikesedi.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/tijufekuxonanaxe.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/kannada_bharatanatyam_songs.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_off0000d0f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0F0 5240 bytes
SHA-256: 48807f6f92a82c8a1603bfe0918646438ef9faff1dc315d372326594914a0789
font_01_sfnt_off0000e2b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2B5 10632 bytes
SHA-256: e79efb784d7648b60d4ba9c7bcea8045f2c7ab9cf2a4f033f0cd7e399f643022

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