Malicious PDF — malware analysis report

Static analysis result for SHA-256 93cab94e013f7cc2…

MALICIOUS

PDF

117.7 KB Created: 2021-06-25 19:32:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 578a785b28a5a62d900506764dc81775 SHA-1: 0ac874ef5caf2a9397e799ec8889247f9172b029 SHA-256: 93cab94e013f7cc2b541a536a8231004ce03bb23ec877edcbda8a2af137eb806
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF contains embedded JavaScript and a link farm pointing to compromised WordPress upload storage, indicating it's designed to deliver a malicious payload. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggests the document's content is a lure for an advance-fee fraud. The embedded JavaScript likely facilitates the download and execution of a second-stage exploit or malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://nowyhotelik.pl/userfiles/file/46887707150.pdf
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/7721c9e9f058a30c69f6f9e272bd8877/tabepoput.pdf
    • http://mdbim.pl/ubezpiecz/obrazy/file/ramafizanukepimukudiwane.pdf
    • http://westernstudioservice.com/admin/userfiles/file/febusijatexabimemirame.pdf
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/16071b9ce23e3c---gegitogazip.pdf
    • https://biodent.ro/m4fm_files/m4news/ck-uploads-files/gagigizijobuxawilesifija.pdf
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/u9fq3a3tro1po8kk2757oqkos2/rutabojojobelaboxugut.pdf
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/pt97uf5r5h1tlupmqdsec6c4cf/45843908227.pdf
    • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ccaec4647e---sebosolopelikekevivib.pdf
    • http://villaturri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096d35fed677---39111995241.pdf
    • http://zs-g.jp/app/webroot/js/ckfinder/userfiles/files/30884030735.pdf
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a3937933f11---bubexatetidi.pdf
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/36i54e1e4igfjvl181dt1f2t4r/97746160121.pdf
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/3ceb0c1eb1746d9cfcf0f58fba524f2e/7579133172.pdf
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/9e97332699cd4cf20aef10ac80c6becf/38294085839.pdf
    • http://payassistinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071904c72857---gotojerebapejoderufurifo.pdf
    • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/16099a0e8b8fb5---rekiser.pdf
    • http://jrpst.pl/userfiles/file/1238703195.pdf
    • http://aceonlinementors.com/userfiles/file/bitotorumumilizejafenuka.pdf
    • https://www.swissfillon.com/wp-content/plugins/super-forms/uploads/php/files/8331db288c258613dca51d3abeaca324/5505666865.pdf
    • https://edoxmarketing.com/wp-content/plugins/super-forms/uploads/php/files/am24bp325mtigf3mdvgmaeqfu9/wefalomugituz.pdf
    • https://thietbivesinhanhhuy.com/asset/files/88862378572.pdf
    • http://clarkhigh72.com/clients/3/34/34275c7d49a174b5f6cf03bf5966da6c/File/sarogapitukupamizunewe.pdf
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/25eaad436f4f6f3f5e492b9dfa76b050/kofed.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=types+of+type+casting+in+java
    • 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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000165f5.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x165F5 16792 bytes
font_01_sfnt_off00017e07.bin
c7520edd4ed6b587ff11a5e41b8ee42be2de31230d4c9e4b7432970c3a71da45
pdf-font-stream PDF embedded font (sfnt) at offset 0x17E07 18896 bytes
font_02_sfnt_off0001b08d.bin
d2a0555cae51c62ba40e1fda325fe9eb4f8384334c047d0bc51bfd6db645e906
pdf-font-stream PDF embedded font (sfnt) at offset 0x1B08D 10780 bytes