Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b2e92436e83e26d…

MALICIOUS

PDF

85.6 KB Created: 2021-03-14 02:02:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: dc0393c317e99277f7cb2a1a438dde7c SHA-1: 57ad1f1dc05e164ab8fce3834f6ead80fa6c8b65 SHA-256: 9b2e92436e83e26d6edcec76c58f817e90dc1939e8e27edc94b62d9205b221cb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a large number of external links, suggesting it functions as a link farm or a lure to download further malicious content. The presence of a 'download button' heuristic further supports the phishing or scam-related nature of this document. No scripts were extracted, but the overall structure and link farm behavior indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 7

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=manual+4l80e+conversion PDF link annotation
    • https://nopubogap.weebly.com/uploads/1/3/4/6/134667077/nusujupigowimeg-tosumusaz.pdfIn PDF document text
    • https://zunatiwol.weebly.com/uploads/1/3/0/8/130815351/c87351baad581.pdfIn PDF document text
    • https://toxafowusolele.weebly.com/uploads/1/3/2/8/132815148/dofonu.pdfIn PDF document text
    • http://trudogoliya.online/starhub_tvb_programme_guidedazum.pdfIn PDF document text
    • http://argo-tourism.com/pobetexezesum4qvno.pdfIn PDF document text
    • https://mudatikijamowa.weebly.com/uploads/1/3/1/4/131408537/83cb4504bf7c.pdfIn PDF document text
    • https://dulewidojupetor.weebly.com/uploads/1/3/2/6/132695372/gasutegevirim_nekarug.pdfIn PDF document text
    • https://samaruwopag.weebly.com/uploads/1/3/0/7/130738554/telixamas.pdfIn PDF document text
    • https://kigazodiraju.weebly.com/uploads/1/3/4/6/134678535/b0a99ac5.pdfIn PDF document text
    • https://bigikudas.weebly.com/uploads/1/3/0/7/130775628/0aba59b166f99.pdfIn PDF document text
    • https://wurotifaji.weebly.com/uploads/1/3/4/3/134315076/165373.pdfIn PDF document text
    • https://voperupazekeko.weebly.com/uploads/1/3/4/5/134505312/ec71290b89.pdfIn PDF document text
    • https://bumozirejukije.weebly.com/uploads/1/3/5/3/135340746/9809586.pdfIn PDF document text
    • http://strgb2.ru/35924097617nbfbp.pdfIn PDF document text
    • https://kabezanaxojuzer.weebly.com/uploads/1/3/4/2/134234652/vuloreta.pdfIn PDF document text
    • http://azorocheat6.xyz/guidebook_gallery_windows_xpj170h.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://7fe6b731-3703-45da-bcbe-faf39b4d3392.filesusr.com/ugd/880a7e_e1d724e6b1134d359ffbb30ec4486b9f.pdf?index=trueIn PDF document text
    • https://cccd2283-d272-450a-840b-6541230ebad2.filesusr.com/ugd/5de1df_31db412200aa4f46aa8a057533cc6951.pdf?index=trueIn PDF document text
    • https://510adc33-753b-44c0-977e-8d34da8fcdd4.filesusr.com/ugd/5f4192_08db867d2fd64ac6acb76c5187c43bc0.pdf?index=trueIn PDF document text
    • https://f803bf1b-e1c2-47f6-a41f-c9785c88fbd4.filesusr.com/ugd/bf07b1_3eacc1d76d5544f48f841a722dd3ea7e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kegovev/children_s_songs_malayalam-_free.pdfIn PDF document text
    • https://f3c4034a-4a94-4c47-b6c5-0445626d7bf8.filesusr.com/ugd/655f09_e6f2ca1cb1a64effb64dbc3882ba4156.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/bt_chia_s_wifi_trn_android.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_off0001116a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1116A 5280 bytes
SHA-256: a1aeb537f19224d25ba4b564951bb18a5f42ccd6bd5cc0ceff1fc6804a121efe
font_01_sfnt_off00012385.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12385 11336 bytes
SHA-256: f4a2109db2fa6911ae398488a972e61e89e56c9537fc41c200889d3d34fadab2

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