Malicious PDF — malware analysis report

Static analysis result for SHA-256 11828d4ad306732d…

MALICIOUS

PDF

85.4 KB Created: 2021-09-23 03:55:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: aa2b9e5be820e61af098d2e29ec7f504 SHA-1: 9e83a2250166af8a064102f2da0dd2b15586e091 SHA-256: 11828d4ad306732dc894ebe40e793b1538fd0f73f37f07caac4036563c95ac2c
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains numerous embedded URLs, many of which are part of a link farm designed to redirect users to potentially harmful content, such as pirated movies, as suggested by the 'watch it 2 123movies' UTM parameter. The document's structure and numerous links suggest an attempt to exploit user curiosity or a desire for free content to lead them to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://huntic.ru/uplcv?utm_term=watch+it+2+123movies PDF link annotation
    • https://kingbakerypans.com/userfiles/file/21043467205.pdfIn PDF document text
    • http://1qjd.com/upload/files/2021-09-21-11-38-36-GRHVGTO1.pdfIn PDF document text
    • https://renewone.de/files/mikudib.pdfIn PDF document text
    • http://alpinist.store/sribati/editor/uploadfiles/jutezekes.pdfIn PDF document text
    • http://slenderclub.cz/ckfinder/userfiles/files/padisolajejoguvupubuv.pdfIn PDF document text
    • http://xn--80ahcjevtqq.xn--p1ai/ckfinder/userfiles/files/26439885841.pdfIn PDF document text
    • http://yacpa.org/yacpafiles/file/59672187109.pdfIn PDF document text
    • http://synergyproperty.com/images/files/6441203415.pdfIn PDF document text
    • https://equipelec.fr/ckfinder/userfiles/files/rezizesebofawi.pdfIn PDF document text
    • http://mexvp.com/ckfinder/userfiles/files/nonakepelufakovudonutokad.pdfIn PDF document text
    • http://aolisenjiancai.com/data/files/83656010455.pdfIn PDF document text
    • http://sinostandards.net/upload/files/70112638161.pdfIn PDF document text
    • https://mudraconsultancy.com/uploads/files/93038780316.pdfIn PDF document text
    • http://sirinthepgroup.com/userfiles/file/25910620542.pdfIn PDF document text
    • https://alzubidi.com/userfiles/files/polofivexaduvaxiloga.pdfIn PDF document text
    • https://booknowrentalimo.ch/userfiles/files/71156330984.pdfIn PDF document text
    • http://e-pisanie-prac.pl/famprojekt_z_serwera/images/file/20459418685.pdfIn PDF document text
    • http://abwpetersburg.com/uploads/files/vixafap.pdfIn PDF document text
    • http://chrisdepanneservices.com/Sites/cds/files/boroweloxivob.pdfIn PDF document text
    • http://woori-tour.kr/FileData/ckfinder/files/20210919_6842CEBAEE9B9152.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/161327550c6a84---xixoxem.pdfIn PDF document text
    • http://arcenevents.nl/site/upload/files/78414129085.pdfIn PDF document text
    • http://www.tiande-global.com/ckfinder/userfiles/files/51100075014.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_off0000e814.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE814 18716 bytes
SHA-256: b474c470c36d4182c58848ba4414ca0f2cea97f7271ed4ce9e2cba9260888e5c
font_01_sfnt_off0001186b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1186B 10648 bytes
SHA-256: ce2ae2560d5b49898db658cc502c12cc30c749aa595acf90785e4686da63a152
font_02_sfnt_off0001310a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1310A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1