Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d1069c042acd5a5…

MALICIOUS

PDF

73.0 KB Created: 2021-08-05 19:43:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: e956711354e2d5dc62c495981a62f2f5 SHA-1: c4da95a71ee0bc500f442d89182acdc624840a18 SHA-256: 7d1069c042acd5a5813fa42fee2992df0b19a63394fb61b44ae9dd9b2820d641
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many pointing to compromised WordPress sites, suggesting a link farm for SEO poisoning. The presence of embedded JavaScript, flagged by heuristics, indicates potential malicious scripting capabilities. The ML classifier also strongly suggests maliciousness, likely due to the document's structure and embedded content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 6

  • 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 https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071a1d92f5ef---25003692080.pdf In PDF document text
    • http://skonasystems.com/userfiles/file/11531095030.pdfIn PDF document text
    • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607231d1586b7---6059773166.pdfIn PDF document text
    • https://aradovan.com/userfiles/file/18250031225.pdfIn PDF document text
    • http://munnarinfo.in/userfiles/file/77202602697.pdfIn PDF document text
    • https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/jdua4spd69rmf0idq5bqsf1i11/52734073064.pdfIn PDF document text
    • https://festival.bg/fckeditorfiles/file/lilitovopira.pdfIn PDF document text
    • http://stphilomenaonline.org/userfiles/file/54495274576.pdfIn PDF document text
    • http://lexus-custom.com/js/upload/files/58686841803.pdfIn PDF document text
    • http://doverhighschoolhalloffame.com/clients/2/2d/2d76883e1086210ef8e2c43836b0327f/File/ridujezaleradomivapemom.pdfIn PDF document text
    • http://isdoor.ru/uploads/files/97913869237.pdfIn PDF document text
    • http://haniltm.kr/upfiles/editor/files/lemejela.pdfIn PDF document text
    • http://twothirdsmajority.us/clients/38522/File/278032927.pdfIn PDF document text
    • https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/134061f0b49657e7ab997b7845d12e3c/79233543269.pdfIn PDF document text
    • https://prestinireedcorp.com/userfiles/files/vatujafiwud.pdfIn PDF document text
    • http://thetsaban3watnuea.com/UserFiles/file/remigumolo.pdfIn PDF document text
    • https://www.tctnanotech.com/wp-content/plugins/super-forms/uploads/php/files/c08f2b1d08567d81829c5c465ce3d377/27750922876.pdfIn PDF document text
    • http://aucoindeshalles.com/menu/file/55110377716.pdfIn PDF document text
    • https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/uqbk0nss56cpv7r5vbj4gop045/31354209207.pdfIn PDF document text
    • https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/cq7qcles1aqqc3mn3712h3t2l9/54157856806.pdfIn PDF document text
    • https://aftaplan.com/works/peepsparty/html/upload_files/file/58160620267.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1609b5d13d3eb3---52469659323.pdfIn PDF document text
    • https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/eebavvjmlsq0h804r31a24oqad/71042722749.pdfIn PDF document text
    • http://anvlaw.com/userfiles/file/gagesidesitodexasos.pdfIn PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160e2000057e5d---72430620327.pdfIn PDF document text
    • http://vietxetai.com/wp-content/plugins/super-forms/uploads/php/files/n70lribdjlmi3amuj3gs67t3nk/12554778526.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=sketchup+pro+2015+latest+cracked+free+download+full+version+and+keygenPDF link annotation
    • 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_off0000bbc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBC2 11860 bytes
SHA-256: e1389f273841659fe3e89cf4a7fc98f01406854a8f108e44d3aa6b9bd038d94e
font_01_sfnt_off0000d81c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD81C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f02e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF02E 14380 bytes
SHA-256: 288460f047f803a9d259e07afe2f93565bc2be8f7cb7eeb714fc7830f0b48431

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