Malicious PDF — malware analysis report

Static analysis result for SHA-256 699ff7ad999da16d…

MALICIOUS

PDF

81.2 KB Created: 2021-09-13 16:49:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: c0f364a425a0c1dc98331136d726df02 SHA-1: 15410f4a65949c50b393b8a1c51d737ad8331535 SHA-256: 699ff7ad999da16d9c3b9e5c4ae24d2917268dc38d1ac8f1e2d2536704188aea
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, and contains embedded JavaScript. It also functions as a link farm, directing users to numerous external URLs, including one that appears to be a redirector with a UTM term. This suggests the PDF is designed to lead users to potentially malicious content or phishing sites.

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://coretry.ru/uplcv?utm_term=cheetah+keyboard+2018+apk+download PDF link annotation
    • https://scout-educationguide.com/userfiles/file/fibewetanazesigoj.pdfIn PDF document text
    • https://tp-pos.com/uploads/image/files/99818175484.pdfIn PDF document text
    • http://budropol.de/Upload/file/11064304295.pdfIn PDF document text
    • http://elvirajogsi.hu/ckfinder/userfiles/files/vakexudasekebizej.pdfIn PDF document text
    • https://j26clean.com/upload/files/bevij.pdfIn PDF document text
    • https://bestrecycledautoparts.net/images_i/file/xanexevijususefomirutixow.pdfIn PDF document text
    • https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/4an7afbfgu1bljd69q0om1q5v6/90877868588.pdfIn PDF document text
    • http://myucpb.com/userfiles/file/lidirabozefonigowutekut.pdfIn PDF document text
    • https://anne-berger.de/sites/anne-berger.de/files/fkcfile/xojuku.pdfIn PDF document text
    • http://i-harmonics.com/upload/files/70007878798.pdfIn PDF document text
    • https://tutorbolivia.com/userfiles/file/76314854502.pdfIn PDF document text
    • http://qapoll.com/2015/vat/upload/files/wapuvewat.pdfIn PDF document text
    • http://ahkkpcm.org/userfiles/59520937759.pdfIn PDF document text
    • http://retrolondontees.com/userfiles/file/25370732965.pdfIn PDF document text
    • http://nfc-lampang.com/user_img/files/61279118743.pdfIn PDF document text
    • https://minipowerpack.net/upload/files/41471155530.pdfIn PDF document text
    • http://shiinamotors.com/js/upload/files/90206439082.pdfIn PDF document text
    • http://ttccid.com/userfiles/file/49026747949.pdfIn PDF document text
    • https://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/894e8a846ac53c876808d702c594206f/19557604975.pdfIn PDF document text
    • https://napraforgohotel.hu/upload/file/wiwemufilixok.pdfIn PDF document text
    • http://fields-on-earth.com/images/blog/file/kovufuzedutuzeg.pdfIn PDF document text
    • http://hooleihomes.com/cms_images/file/24064871793.pdfIn PDF document text
    • https://oreopay58.com/ckfinder/userfiles/files/10810929980.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_off0000d1f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1F2 19296 bytes
SHA-256: 14b5964930d1b50bba5d1d9eea5af71b21d9281f0010b418fb8e3d2cbf360f0b
font_01_sfnt_off00010527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10527 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011d3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D3E 11192 bytes
SHA-256: 42b0aade0591958c102d5113ba850944a228520aac01852d825ba8af336ec1b9

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