Malicious PDF — malware analysis report

Static analysis result for SHA-256 b20d8aa036d71069…

MALICIOUS

PDF

84.6 KB Created: 2021-06-28 21:44:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 79c5baa651d74dbc211dd8c705917596 SHA-1: a8f70c3c3cebd943d474f39747c5f271da8db726 SHA-256: b20d8aa036d71069bf7c45be650c09565cd66711cc629adb53365e56dce3c0b5
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is classified as malicious and exhibits characteristics of an advance-fee scam, luring victims with promises of prizes or funds requiring delivery. The document contains numerous embedded URLs pointing to various domains, many of which appear to be compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate potential for malicious JavaScript execution, commonly used in such phishing lures.

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
  • 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.
  • 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://infrive.ru/uplcv?utm_term=how+much+protein+in+100+gm+brown+rice PDF link annotation
    • http://langmypham.com/luutru/files/81829003717.pdfIn PDF document text
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16074465633c23---56385055696.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/d89a344300bdc276586ae0402cce9811/ritebulesoxigi.pdfIn PDF document text
    • https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ee633ce9af---52303964955.pdfIn PDF document text
    • https://atraba-holding.com/userfiles/file/detiresijefubirutawabavom.pdfIn PDF document text
    • http://dainichiji.com/upload_ckr/files/92841998190.pdfIn PDF document text
    • http://saamfactory.com/wp-content/plugins/super-forms/uploads/php/files/35d45cd73371c68d56cea7a1769b7d33/9558469623.pdfIn PDF document text
    • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160cdcf681455a---vuzesamenomedusotafafimip.pdfIn PDF document text
    • https://grup-insaat.com/userfiles/file/1715135881.pdfIn PDF document text
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/g7jc1l8iatqvctsofip04hifi1/42110841639.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/2872e13804669e4ec70107461acf303c/sozefotufikagapidodo.pdfIn PDF document text
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/88649e93d493d9f2f121bc2a1be9610f/75323169131.pdfIn PDF document text
    • https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d778f7c069---83111699349.pdfIn PDF document text
    • http://www.assignproject.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076ec341917e---12784861582.pdfIn PDF document text
    • http://razaviota.ir/basefile/razaviotair/files/poberaxexomifo.pdfIn PDF document text
    • http://www.reenactmentmarket.eu/images/wyswig_images/file/xiwat.pdfIn PDF document text
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a58303a2c4d---vuxibuvudobelunizakejek.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/4f79668eeac4a5809829f371b4242bc4/misozas.pdfIn PDF document text
    • http://championshipsportsrings.com/clients/23492/File/29564616813.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/linokakoxabizoxivinulibo.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://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_off0000e6fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6FE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ff10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF10 17356 bytes
SHA-256: e394a8cb807ffe8f2deeb86b2109ff7a99b5ba1850883237ee5b069eff73ef24
font_02_sfnt_off00012c53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C53 10936 bytes
SHA-256: 05f58e31edd77333e0f648c508418e88b375a3e710faa2a4efdfc5a7903dba26

Open this report in the interactive analyzer, or submit your own file for analysis.