Malicious PDF — malware analysis report

Static analysis result for SHA-256 034f29080d309787…

MALICIOUS

PDF

81.4 KB Created: 2021-03-20 08:22:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 25ed8d0dd125c6d178b002135c913617 SHA-1: b02ef88aedcef4f73605c2cce5efbc7e4e974bf8 SHA-256: 034f29080d3097876ecbd6edb7c956eed050d6f1eec46f43a0ce1e9b147ab0f7
186 Risk Score

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 0.9993

Heuristics 6

  • 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.
  • 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://xajibur.ru/wix?keyword=ti+letter+to+lil+wayne+stand+up PDF link annotation
    • http://ital-tess.space/219582931496k8o9.pdfIn PDF document text
    • https://tiseworadew.weebly.com/uploads/1/3/5/3/135317060/petaje.pdfIn PDF document text
    • https://revafabeku.weebly.com/uploads/1/3/4/7/134708131/157d7386f85ba8.pdfIn PDF document text
    • https://nitipitu.weebly.com/uploads/1/3/0/7/130775162/b9636e210.pdfIn PDF document text
    • http://girlita.space/airpods_2_gestures_androidzzuad.pdfIn PDF document text
    • https://xasatodifugo.weebly.com/uploads/1/3/4/4/134439571/nuguwew.pdfIn PDF document text
    • https://lupunudarowujak.weebly.com/uploads/1/3/4/5/134599946/2914982.pdfIn PDF document text
    • https://sijokazodile.weebly.com/uploads/1/3/1/4/131454207/zusazoj-visolozux-gonodemo.pdfIn PDF document text
    • http://tiktokhd.design/66785268218voen7.pdfIn PDF document text
    • http://groby-ritual.online/when_does_brandon_ingram_become_a_free_agentbt38g.pdfIn PDF document text
    • http://siwosupegejolop.medianewsonline.com/faringoamigdalitis_aguda_bacteriana.pdfIn PDF document text
    • https://toxodomof.weebly.com/uploads/1/3/1/3/131384531/bedusoji-pipami.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/degagaziv/gurriel_jr_injury_report.pdfIn PDF document text
    • http://rixibedi.onlinewebshop.net/south-west_insurance_agency_inc.pdfIn PDF document text
    • https://s3.amazonaws.com/dopugaxelelema/spiderman_wallpaper_hd_3d.pdfIn PDF document text
    • https://0df6220b-9630-4647-aab6-0d9db69b9d59.filesusr.com/ugd/8b97dd_fc314037c43742828a254c92429479a3.pdf?index=trueIn PDF document text
    • https://fc060a1e-8c1d-4b7d-bafd-75f79d4c6355.filesusr.com/ugd/c0a468_a6ead8b525ba4e5ab2140505e6e7a516.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/urine_culture_report_sterile_means.pdfIn PDF document text
    • http://kimoviranonaf.onlinewebshop.net/technical_analysis_explained_pring.pdfIn PDF document text
    • https://56148a0a-83a3-4003-94ff-78d3044b7c00.filesusr.com/ugd/6f5f23_418d01e41cb04f88a7ce1756e6cf920d.pdf?index=trueIn PDF document text
    • http://lenofafezanobu.atwebpages.com/zapunixilegamunenubini.pdfIn PDF document text
    • http://dapufojutujat.atwebpages.com/wosolaruviziritetox.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/how_to_use_nikon_f50.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/dolodotudaxudofadu.pdfIn PDF document text
    • https://68e1e3d4-268d-49bc-a8aa-b119cb10fea7.filesusr.com/ugd/3ceeb9_96b679491f1642d3b5dcfc237d073fc1.pdf?index=trueIn 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_off0000fd64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD64 5096 bytes
SHA-256: 0bfb5805e208df6d308ac686d684148fdd55a8edebd50816287e08ffdc0bc983
font_01_sfnt_off00010edc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EDC 11844 bytes
SHA-256: 01aec88ea26db08010594d3454458084da25a31874592e579850ae2cfbcdaa1e