Malicious PDF — malware analysis report

Static analysis result for SHA-256 bebaba97eb74ad45…

MALICIOUS

PDF

86.2 KB Created: 2021-07-01 17:43:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b68766b3927d0379d05602ed5cb65d5b SHA-1: f67c2aaa19214032384f73f90f60a4ccad9bc447 SHA-256: bebaba97eb74ad45de75b49f9c9b3fd7abef822bc57dd7a71b68ab7bd81fa942
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as a phishing trojan by ClamAV and an ML classifier. It functions as a link farm, presenting numerous URLs that point to compromised CMS upload directories and disposable hosting, likely to obscure the ultimate destination or host malicious content. The presence of embedded URLs and the overall structure suggest an attempt to lure users into clicking malicious links, potentially leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9819

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
  • 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 http://pogologistics.com/ckfinder/userfiles/files/35933464471.pdf
    • http://www.moteco.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16093afd7e7712---zivemusu.pdf
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160da2fb0e1c10---49995441307.pdf
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b21f50dd45f---25134203107.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609180cf7f70a---semunonesiborasip.pdf
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/35be091367724a79a147899686d8df9b/begiguwitalixi.pdf
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160adc8eba6b31---dejovuraxovimudugobozivop.pdf
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160760a533d158---xokilu.pdf
    • http://kiuruvedenlukio.fi/tiedostot/file/lefekumuvilik.pdf
    • https://quatcongnghieput.com/uploads/files/87022432734.pdf
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/138930c96ed002b5cd998f889632d7c0/7763638318.pdf
    • https://www.letspassdriving.co.uk/wp-content/plugins/super-forms/uploads/php/files/k8kk23qn901jfors414nngbc0h/3285642013.pdf
    • http://anhuicrew.com/upload_fck/file/2021-4-28/20210428233127376820.pdf
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/889be6023ac8367465c628d47bdd60db/tovipasugekaba.pdf
    • http://amoy-art.com/Upload/file/17947293505.pdf
    • http://studioagm.it/userfiles/files/90494973050.pdf
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/78q6724i0b1kk1520r331nrm14/jadoga.pdf
    • https://www.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/dkv89l14tql2kmp6n2s1u3v9pl/24375208142.pdf
    • http://toshiteriyakiburien.com/uploads/files/rolavurifotodixozetobirev.pdf
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c1e3eb1278d---bogupupuvonebibotiwa.pdf
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/160abbe14b9c7b---92142670862.pdf
    • https://carstenrath.com/wp-content/plugins/super-forms/uploads/php/files/u2itqlcccfl41jafbap66445gi/rodomojofuzowalejapan.pdf
    • https://honghow.com/ckfinder/userfiles/files/bepaxej.pdf
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/160741aa505eba---tonewezarutivoloxovadenak.pdf
    • https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/gqldt5h1prdpdnojh30pfo2h38/femupolexi.pdf
    • http://petra-dario.info/upload/datoteke/zisunovi.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=1100+words+you+need+to+know+answer+key
    • http://lovewhereyoulv.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/d357fb06cb225a5e6e4912d17a0abea9/bifudefoton.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea56.bin
1fbc0b2cd456268dd3370dac558b7102fc07b81b5bfc7424a42727554cecb855
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA56 17876 bytes
font_01_sfnt_off000118c4.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x118C4 16792 bytes
font_02_sfnt_off000130db.bin
ef5128c6fc581fe7c08550fc52c67404bc80454a5826f16ef30b8a3e6d603aee
pdf-font-stream PDF embedded font (sfnt) at offset 0x130DB 10572 bytes