Malicious PDF — malware analysis report

Static analysis result for SHA-256 49196d60e0e546f4…

MALICIOUS

PDF

92.5 KB Created: 2021-08-04 13:46:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: c3aed5c3c8b57807bb3512e56711aa70 SHA-1: 13c7b04ec29377a10ed2286208e65d0f1954b994 SHA-256: 49196d60e0e546f42f8dc53de0cdb526118ae077307ed3a9cd1801943862e0e7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including one explicitly mentioning 'fifa mobile iphone cheats', suggesting a lure for phishing or malware. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics indicates a pattern of using compromised websites for hosting malicious content. ClamAV detection and ML classification further confirm its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://inwebjor.ru/uplcv?utm_term=fifa+mobile+iphone+cheats PDF link annotation
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/1607045504b74b---vasibalojibogotulipaxu.pdfIn PDF document text
    • https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/a3qdo8l94l0djnpg3unrmg6016/wosaragipabimusezez.pdfIn PDF document text
    • https://clove7.com/userfiles/file/porex.pdfIn PDF document text
    • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160af8ad523667---12820377825.pdfIn PDF document text
    • https://bangprice.combangprice.com/beta/cms_image/file/xezukunepuxuxibabejo.pdfIn PDF document text
    • http://www.communityheroesproject.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609aabbb234ba---9914972973.pdfIn PDF document text
    • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0fe9d34d25---26919315334.pdfIn PDF document text
    • http://studiospazioambiente.it/userfiles/files/vawututavewevumofaluvik.pdfIn PDF document text
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/43b1f229d5cdb25cd089aa8b6569e336/felokurasewa.pdfIn PDF document text
    • http://galgalesh.com/userfiles/file/79382883670.pdfIn PDF document text
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/160746058985cf---favujo.pdfIn PDF document text
    • https://jgmurphy.com/wp-content/plugins/super-forms/uploads/php/files/cde85e16eef0065b1be383ee37f2b2c1/bixebetaju.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bd669de7fb4---91420164096.pdfIn PDF document text
    • http://bawaconstructions.com/editorData/file/gikijo.pdfIn PDF document text
    • https://akapacha.com/userfiles/file/pamajuberikanidumig.pdfIn PDF document text
    • http://kuresi-kaitori.com/upload/content_pic/files/9505592340.pdfIn PDF document text
    • https://taichielite.com/louis/taichi/ckfinder/userfiles/files/11005782758.pdfIn PDF document text
    • http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa658ce4341---96850537767.pdfIn PDF document text
    • http://moyamoya.center/images/hand_uploaded/files/85639016451.pdfIn PDF document text
    • http://palenice.net/obrazky_clanky/file/vamifuwopi.pdfIn PDF document text
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/6f9e9abab8f5c6ac8c5051250fd4cb0e/fukugex.pdfIn PDF document text
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bedece75bad---65935833236.pdfIn PDF document text
    • http://qtjdb.com/UploadFile/2021/06/04/file/20210604_014340_115.pdfIn PDF document text
    • http://liburnia.pl/userfiles/file/95687996960.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_off0000f398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF398 10760 bytes
SHA-256: 74a220dcb7f0349407a5ff67942c091eefb7b7ee7b40389291e85594f5693e26
font_01_sfnt_off00010be7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BE7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000123f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123F9 24528 bytes
SHA-256: f5a507aa359ae979f8ac8d055361b875bef7b8286a171266fd6c2c1626f440ce