Malicious PDF — malware analysis report

Static analysis result for SHA-256 55e5e27147998009…

MALICIOUS

PDF

79.2 KB Created: 2021-03-28 18:31:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a869c887662c32064e3e2a7a7e0ca47 SHA-1: 916680c2f696ddb66e7d8025a0c326b5b4370ec8 SHA-256: 55e5e27147998009d77b85381c8fac60b1cc543cb8c3ea950d9b2a57fda87bfa
164 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent link pointing to 'https://baarspo.ru/strik?utm_term=tesla+model+3+price+drop+history', suggesting a phishing or scam attempt. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, further supporting this. While no scripts were explicitly extracted, the ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://baarspo.ru/strik?utm_term=tesla+model+3+price+drop+history
    • http://fimewovoko.getenjoyment.net/pdf_editor_file_free_software_download_in_adobe_reader.pdf
    • https://wunogalabapa.weebly.com/uploads/1/3/4/6/134603674/2180334.pdf
    • https://fikozipe.weebly.com/uploads/1/3/4/8/134887908/9612062.pdf
    • http://dobuwiwitevotir.sportsontheweb.net/81292074387.pdf
    • https://busemuvida.weebly.com/uploads/1/3/4/6/134643921/b21bb79b0.pdf
    • http://wobufiparezir.medianewsonline.com/split_tool_for_ubuntu.pdf
    • http://nijewogifuzazi.mypressonline.com/aromatic_halogen_compounds.pdf
    • https://zirofapenepag.weebly.com/uploads/1/3/4/8/134855920/5330058.pdf
    • https://jirakeleda.weebly.com/uploads/1/3/5/9/135992973/limodajematodulonopa.pdf
    • http://wabiferofuvud.mygamesonline.org/kenmore_700_washer_repair_manual.pdf
    • http://mizarujil.mypressonline.com/como_estudiar_ingles.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nelizenejakarug/81833711160.pdf
    • http://vepitejususas.atwebpages.com/korean_embassy_visa_application_form.pdf
    • https://s3.amazonaws.com/niporofez/shiv_bhakti_geetalu_audio_songs.pdf
    • https://uploads.strikinglycdn.com/files/5b67918c-e70d-4d72-95ed-3e508e49c485/jagatudipa.pdf
    • https://uploads.strikinglycdn.com/files/750339ff-bf54-427d-8e5d-9a9e03c0a607/5034449661.pdf
    • https://s3.amazonaws.com/zarusegibitumet/twilight_saga_movie_songs_free_download.pdf
    • https://uploads.strikinglycdn.com/files/80869fbb-065c-4521-9fd4-66279ddeab5b/farotubapefazozitonu.pdf
    • https://s3.amazonaws.com/fujadabez/cardan_shaft_alignment.pdf
    • http://sefowolo.atwebpages.com/badunedexexobaxata.pdf
    • https://s3.amazonaws.com/salade/benham_palmistry.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_off0000f6fb.bin
13fcce11a7785bcdd724c5025d2fc2ecdf78ab865129845f3b14e14038f90cee		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6FB 5528 bytes
font_01_sfnt_off000109a0.bin
a117e0ae4878bba1e46f3e2a5f417276e27c24d014776df2d481cd60d900734d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109A0 11220 bytes

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