Malicious PDF — malware analysis report

Static analysis result for SHA-256 14b9001509f55d13…

MALICIOUS

PDF

82.5 KB Created: 2021-09-17 04:06:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: f0b0124810f2e94cbf14fe83019b25f3 SHA-1: b3e176cc48c84f0ea2885bab8367d567c06c8ec7 SHA-256: 14b9001509f55d13e067c747c148590738eaaab825f47e5d63e2b6f5cad6038f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by both ML classification and ClamAV, indicating a high likelihood of malicious intent. The document contains numerous links pointing to compromised WordPress upload directories and disposable hosting, suggesting it's part of a link farm designed to redirect users to malicious sites. The presence of external URIs and the overall structure strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9918

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://crysiq.ru/uplcv?utm_term=stream+football+games+free+online PDF link annotation
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130174bdbf86---38616845369.pdfIn PDF document text
    • http://www.firstpages.eu/app/webroot/files/userfiles/files/merovoputikopalefareba.pdfIn PDF document text
    • http://skkouty.cz/ckfinder/userfiles/files/pafuridarurixosit.pdfIn PDF document text
    • http://akinmedikal.com/uploads/file/jaxona.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143831a9530f---18204408703.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138a83056d44---22601857995.pdfIn PDF document text
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131fdd6d58e0---kumifosimenegaju.pdfIn PDF document text
    • https://ijaetis.org/ckfinder/userfiles/files/49192534327.pdfIn PDF document text
    • http://tabletopad.com/images/file/vumoxavivegesomisu.pdfIn PDF document text
    • http://trineckevzdelavani.cz/webpagebuilder/ckfinder/userfiles/files/sulitusexunozite.pdfIn PDF document text
    • http://jump360.co/upload/files/20210908023414.pdfIn PDF document text
    • https://zibarajabi.com/cache/fck_files/file/kivuxifogozesemusetar.pdfIn PDF document text
    • http://proclima-membranes.ru/userfiles/file/tagajatazebenove.pdfIn PDF document text
    • https://gencatakan.com/upload/file/nalubazejobina.pdfIn PDF document text
    • http://www.donboscovizag.org/images/files/49439601789.pdfIn PDF document text
    • http://bradhelferlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/falaxazuxililazepa.pdfIn PDF document text
    • http://mbjarrahi.com/UploadedFiles/New/file/davifetun.pdfIn PDF document text
    • https://kaskad-74.ru/images/uploads/wanusimek.pdfIn PDF document text
    • https://wcfkenzi.com/ckfinder/userfiles/files/lemurazaparud.pdfIn PDF document text
    • http://master-sign.ru/ckfinder/userfiles/files/83379606029.pdfIn PDF document text
    • http://abwjefferson.com/uploads/files/pinowax.pdfIn PDF document text
    • http://gomientrung.vn/uploads/image/files/biwebiredakizebometuke.pdfIn PDF document text
    • https://minhkygroup.com/luutru/files/68773743843.pdfIn PDF document text
    • http://halmar.info/userfiles/file/88299589018.pdfIn PDF document text
    • https://nepalmicrofinancesummit.org/userfiles/files/54316286630.pdfIn PDF document text
    • https://manage4.realtourvision.com/rtv/ckfinder/userfiles/images/files/vufiwigiwigewe.pdfIn PDF document text
    • http://hostingureitings.lv/uploads/userfiles/files/11753148210.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_off0000dc63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC63 17944 bytes
SHA-256: 930cffe8bb315f7491e587061cbe2720b4f621f360469b52b20d0d2109c0368a
font_01_sfnt_off00010b21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B21 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12338 10772 bytes
SHA-256: e95b7b3b502dd8421160bb1ff4e2451869be1bc2527c306d5e88bd00073f83cb

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