Malicious PDF — malware analysis report

Static analysis result for SHA-256 c25f96a944165d2e…

MALICIOUS

PDF

67.1 KB Created: 2021-02-17 05:12:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: ce08378b02df08f6c8dc1546afa4504f SHA-1: 60364fd46a0f7725b538df7b0f93a2447e740311 SHA-256: c25f96a944165d2edcd95a97eb9fc5ff3e8cd4c5276ca69a703b0be5309d273d
156 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, indicating a high likelihood of malicious intent. The presence of numerous external links, particularly to domains like 'seumenha.ru' and 'weebly.com', suggests an attempt to create a link farm or redirect users to malicious sites. ClamAV also detected it as Pdf.Phishing.Trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/wix?keyword=smarter+tools+generator+parts PDF link annotation
    • https://dutumujupag.weebly.com/uploads/1/3/1/3/131383630/zijorowemagiw-nusasukuditigag-kewuzimu-porotipudekoz.pdfIn PDF document text
    • http://hookup668.site/siguluxuvofunupomiaqn0.pdfIn PDF document text
    • https://viliwefat.weebly.com/uploads/1/3/1/0/131069961/voguzalamoki-gosenonikefo-gajotorilofobi-butaxapexipu.pdfIn PDF document text
    • http://tb-films.ru/rarufekajalilulomuxawul6rlpy.pdfIn PDF document text
    • http://meetsucre.pro/big_caslon_font_free_mac26qab.pdfIn PDF document text
    • https://fuvapevamasazu.weebly.com/uploads/1/3/4/5/134507747/8735369.pdfIn PDF document text
    • http://pl50off.info/general_tso_chicken_sauce_easy7b2e5.pdfIn PDF document text
    • https://levibaxa.weebly.com/uploads/1/3/1/4/131408620/2396606.pdfIn PDF document text
    • http://parrrtner.xyz/explosive_child_ross_greenecpbzf.pdfIn PDF document text
    • http://vizionsmc.net/75758940945rv1se.pdfIn PDF document text
    • https://viwekaxirudadax.weebly.com/uploads/1/3/4/7/134700275/zekegosoxapubupeluva.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/vobuturinivi/jizip.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/carbonized_rice_hull.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/strategic_trade_act_2010.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/auto_tapper_apk_indir.pdfIn PDF document text
    • http://labapok.rf.gd/buyers_edge_platform_waltham_ma_address.pdfIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/gawupimazavogojejepuwebax.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/mababosoba.pdfIn PDF document text
    • https://s3.amazonaws.com/badodemebo/41630373541.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/1615839766.pdfIn PDF document text
    • http://lubesugoninop.epizy.com/verbal_reasoning_practice_test_answer_key.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA18 5240 bytes
SHA-256: 10e283138c434f3ca58b750c7b9865efa6a06dab6ce17ca944d74d405e4f66fc
font_01_sfnt_off0000dbd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBD0 10440 bytes
SHA-256: 1ca6b7bacb8c33370e2f0ca9a7cc692fed3ba27f226ea1ad234d7fee9521c55c

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