Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab1f7eef54660083…

MALICIOUS

PDF

81.3 KB Created: 2021-09-07 03:21:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 9958cd66d9291eb855efed7ad7a7f4cf SHA-1: 8b390916bc0ce0be913259f3acad7405c4e0964f SHA-256: ab1f7eef5466008376587516ffaa6f2644f02ce392954c39b467425af5e2435e
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pixomot.ru/uplcv?utm_term=panasonic+key+phone+kx-t7730+manual PDF link annotation
    • http://ugyvednok.hu/userfiles/file/27223054417.pdfIn PDF document text
    • http://alexanderkanevskyartgallery.com/clientMedia/file/bukideziti.pdfIn PDF document text
    • https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/2a2481aa0578df841db46479354dfedb/55503077683.pdfIn PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ba8d10436b---besujekajomubajosurupe.pdfIn PDF document text
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/8icj6fnh431526g7j7c8robt95/kazavadelaziguxe.pdfIn PDF document text
    • https://samarpanbharat.org/trila/userfiles/file/21260441170.pdfIn PDF document text
    • https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/74jmg4umk4pi56u1h3pisvppin/liwemax.pdfIn PDF document text
    • http://myphamasia.net/upload/files/60831732807.pdfIn PDF document text
    • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/2f8354d69692081e1a2a4989edc9e7ab/75467113672.pdfIn PDF document text
    • http://milkexim.ru/imgeditor/file/gepitave.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/cec04276bd9cc996a379228c6553e796/72890291129.pdfIn PDF document text
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dd9d494ac7---nopinizonofilepoti.pdfIn PDF document text
    • https://saleskerala.com/ckfinder/userfiles/files/xebugo.pdfIn PDF document text
    • https://takarasushimn.com/userfiles/files/38033568670.pdfIn PDF document text
    • http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608168fb37351---84224446472.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160a7eaa3f1a8c---bofesoxozebokedowenoside.pdfIn PDF document text
    • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/2dc5028675b90cd35fdd279f6fed1509/gefosotivogezewa.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608390e947e1e---zepivejokuwixutajobeb.pdfIn PDF document text
    • http://dh-cell.com/ckfinder/userfiles/files/powaluteli.pdfIn PDF document text
    • http://sdhmladavozice.cz/userfiles/file/niwumuwopemado.pdfIn PDF document text
    • http://www.kizkulesikizogrenciyurdu.com/public/ckfinderuploads/files/suxupitazawolowijisamato.pdfIn PDF document text
    • http://ahchala.com/img/file/46433923900.pdfIn PDF document text
    • https://avonsteel.com/UserFiles/file/41444169567.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_off0000d79c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD79C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000efae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFAE 17300 bytes
SHA-256: bd93a122f42150712026046dacde286e7eda60ae3d29270b4b5c0818c6994bba
font_02_sfnt_off00011cdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CDF 11324 bytes
SHA-256: 234f4a4d5144837f2c5dc1d7546acbabd53800fc68867bf07f17255913be5758