Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf54cb85eddbffc0…

MALICIOUS

PDF

74.4 KB Created: 2021-03-15 02:21:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ad7e7a93f0c2cc46bed98714c7c7a24 SHA-1: 7843e95b4db5c57bbe8a0650163e17503b6e82ed SHA-256: bf54cb85eddbffc032fc4bddfc883a78623cfde3cda10bff695c6d2193901614
156 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a phishing or scam attempt, leveraging a link farm strategy to direct users to potentially malicious websites. The presence of numerous external links, many of which are dynamically generated or obscure, strongly suggests an intent to deceive users into visiting untrusted domains. While no scripts were explicitly extracted, the PDF structure and the high number of external URIs indicate a malicious intent, likely to lead users to phishing pages or malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://xezojetit.ru/wix?keyword=august+2015+trig+regents+answers
    • https://static.s123-cdn-static.com/uploads/4485001/normal_5fce5f4d5582a.pdf
    • https://wobelafesuta.weebly.com/uploads/1/3/4/7/134767333/531139.pdf
    • http://logmeinnow.xyz/retukovebisepcdxmp.pdf
    • http://doweryklkq.space/best_self-_guided_tours_of_japanjav5a.pdf
    • https://static.s123-cdn-static.com/uploads/4501383/normal_6003aacd3898a.pdf
    • https://mugezumaz.weebly.com/uploads/1/3/4/4/134401185/luperafikop-fidazokoso.pdf
    • http://easybranding.org/musavlka8b.pdf
    • http://raftgjgr.space/85191474185qby5g.pdf
    • https://xotugakifegug.weebly.com/uploads/1/3/4/1/134131530/2762315.pdf
    • https://nugivukowunel.weebly.com/uploads/1/3/4/0/134041243/8415475.pdf
    • http://instapriz24.site/70750356801i7mzo.pdf
    • https://cdn-cms.f-static.net/uploads/4371014/normal_601f312289cf5.pdf
    • https://cdn-cms.f-static.net/uploads/4401515/normal_6044fa9ba94ec.pdf
    • https://dapazigozasonim.weebly.com/uploads/1/3/4/4/134466252/vukidiguwu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fbaba6ab-37cf-477f-82bd-e10a416eccda.filesusr.com/ugd/3c8574_e2023a41f58e490490c5f7433bc30cba.pdf?index=true
    • https://a04ad255-06d6-4b17-97e7-91173d300295.filesusr.com/ugd/6864df_349e6222d48e4dd6b7dc399ebe324a78.pdf?index=true
    • https://uploads.strikinglycdn.com/files/0f396e93-0305-4adc-a841-77d2d7e73c53/pisixenotiwim.pdf
    • https://s3.amazonaws.com/zubata/43491491783.pdf
    • https://uploads.strikinglycdn.com/files/2f78b1ba-73f8-409d-97e3-81de59d34147/the_mortal_instruments_series_books.pdf
    • https://s3.amazonaws.com/kagedatabujo/mens_formal_suits_online_india.pdf
    • https://s3.amazonaws.com/turip/exam_master_tamil.pdf
    • https://uploads.strikinglycdn.com/files/7070314d-20eb-4c0c-a565-e66da417ac4d/how_many_watts_is_the_lg_smart_inverter_microwave.pdf
    • https://uploads.strikinglycdn.com/files/5a7b9e9e-fdfc-4195-8b16-9509b0eb04d6/jude_the_obscure_free_download.pdf
    • https://8ab1a2d5-e5b1-44c5-a28c-e09959565f0d.filesusr.com/ugd/eb712c_2790e1ae307a4b709320a85b5627e12f.pdf?index=true
    • https://uploads.strikinglycdn.com/files/3e39ea7a-d41f-48c7-9fc9-9a676d296233/how_to_do_istikhara.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_off0000e17e.bin
099c0034bb7ad2e00baf738743b91826282e4381580384824dfacc294b60e15c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE17E 5352 bytes
font_01_sfnt_off0000f3e6.bin
ddfdded0b2ce328ae66669bf9077d48fbdfd4986270592c75c42ae281f2a8dc4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E6 11684 bytes

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