Malicious PDF — malware analysis report

Static analysis result for SHA-256 30225ddf941b8427…

MALICIOUS

PDF

89.8 KB Created: 2021-06-29 15:42:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: c6479a77ecac979d3fabc3c0effc182c SHA-1: fe6607cbdd45a071ace1d0a8ca5238f0462ead70 SHA-256: 30225ddf941b8427251afd546e1c4ee6dfb05127584d9ae35ef939ebd8e08cea
104 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to multiple compromised WordPress sites, suggesting an attempt to host malicious content or redirect users. The presence of a 'download button' heuristic further supports a lure-based attack pattern. The ML classifier strongly indicates maliciousness, and the overall structure points to a downloader or redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/70707b748190886009c24198552eeb9c/9351745976.pdf In PDF document text
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/n0m4kvgb1hel3ma0obgu7itcqn/56474785202.pdfIn PDF document text
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/160a83c6720f14---kelumotegumegezulet.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16082bd61a8491---31904269429.pdfIn PDF document text
    • https://wita.lt/images/files/55499486292.pdfIn PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a29d202801c---81067018260.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b9bb9dcee61---pilazoke.pdfIn PDF document text
    • https://leo-translate.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1607374c64d3d8---giwevasat.pdfIn PDF document text
    • http://ngocvietbungalow.com/upload/files/97229460904.pdfIn PDF document text
    • https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/3079381f1c9fcdf9eb43570b733039b9/42833283610.pdfIn PDF document text
    • http://jshtextile.com/UserFiles/file///39834379193.pdfIn PDF document text
    • http://arohitourandtravels.com/userfiles/file/88350562868.pdfIn PDF document text
    • https://mziagroup.com/wp-content/plugins/super-forms/uploads/php/files/i0nbu3ncehg9eqh6eqj2glejgc/lekososisimogunigukulew.pdfIn PDF document text
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb839b5f9f5---22890287038.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/s80mfjls3bjpijkkj1tgoml7k1/fetiw.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086e9093bb48---43171453544.pdfIn PDF document text
    • https://seerupit.dk/assens/file/44200848308.pdfIn PDF document text
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160975072c07e2---45787479701.pdfIn PDF document text
    • https://festival.bg/fckeditorfiles/file/wuxegumolapowolixijot.pdfIn PDF document text
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d1ebb8c268---11698760635.pdfIn PDF document text
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c94d8dd6254---kosuzanusesekujukokozeb.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=solid+geometry+bsc+1st+year+solutionsPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e27b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE27B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fa8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA8D 17584 bytes
SHA-256: 5f37fb429025d36f60dd3a82734f4ccf718540c2549819247464cc201fcaf48e
font_02_sfnt_off000128c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128C1 16068 bytes
SHA-256: 6d636ebcb28a43c11a0b96216d988d0aaa25e428b847d4e039b2a2a6b6e27b6d
font_03_sfnt_off00013de2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DE2 11196 bytes
SHA-256: 1ffcf9cbcd61b73369103800a079db488e459c22aa9abf2e5afaaab034c83b42

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