Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e64eda6ef19e3b3…

MALICIOUS

PDF

185.1 KB Created: 2021-03-20 06:22:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6c03ae56873a112783af97c4424fbb8e SHA-1: 811671828c63b2ccfb1abfc35df812dd3ce443c4 SHA-256: 8e64eda6ef19e3b3fe13cda49d301218cfb4a221b5703ab1a151dcf4996aaa91
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9985

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 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://bologen.ru/wix?keyword=logixpro+plc+lab+manual+pdf PDF link annotation
    • http://gejokakop.mygamesonline.org/how_to_make_a_bridge_with_popsicle_sticks_without_glue.pdfIn PDF document text
    • http://kakolamilasaru.medianewsonline.com/zujirepowej.pdfIn PDF document text
    • http://agent-ritual495.online/88358946538sud7y.pdfIn PDF document text
    • https://gunujudota.weebly.com/uploads/1/3/2/3/132303168/6166916.pdfIn PDF document text
    • https://xexigajusotojuz.weebly.com/uploads/1/3/1/6/131606060/2969254.pdfIn PDF document text
    • http://urott-hu.com/didosukisivanikuzogajjsckg.pdfIn PDF document text
    • http://reduslim-officialsite.site/suzuki_sv650_service_manualugbws.pdfIn PDF document text
    • https://rilulukopidu.weebly.com/uploads/1/3/5/3/135323077/7271057.pdfIn PDF document text
    • http://ponemofetu.scienceontheweb.net/somatic_generation_of_antibody_diversity.pdfIn PDF document text
    • http://reabook.online/sewirigod2cj9r.pdfIn PDF document text
    • http://mebelrostov.ru/91095245539m2joj.pdfIn PDF document text
    • https://bizotimugir.weebly.com/uploads/1/3/1/1/131164076/rusax.pdfIn PDF document text
    • http://small-italy.space/48893706529neqiv.pdfIn PDF document text
    • http://ersoil.fun/83820434679p8u21.pdfIn PDF document text
    • http://beautytopshop.site/what_another_word_for_younger_generation0phci.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/jefobexapulow/konapudabelil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93b04ad3-1f60-4c28-a464-3631fdd80cd6/fezikojijamogajilafu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7c65c1c-6c0e-4a5c-9425-edfc1ffea91c/left_handed_ukulele_chord_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/pukaridimupo/94357226076.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/246754f3-777c-42e1-ac96-74be8e726a23/godugil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12032af5-6d3a-4ecb-8853-287ac14d6367/engenius_ens202ext_range.pdfIn PDF document text
    • http://xazopufegi.onlinewebshop.net/pisirezaredodezopotivaloz.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00028697.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28697 5444 bytes
SHA-256: 795ea93d9cbe8c7f8bd1287a8480e6cd2402439551d01e29bb3abef86b0c9b6e
font_01_sfnt_off00029912.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29912 11572 bytes
SHA-256: 30bdff510c8ea0a48947f9fce6fccecbceb7097782d28f765a622539f60bac7c
font_02_sfnt_off0002c090.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C090 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15

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