Malicious PDF — malware analysis report

Static analysis result for SHA-256 0202f703099c41d7…

MALICIOUS

PDF

85.5 KB Created: 2021-07-04 08:30:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 70ad01a5bea1cc1304ab448e5208b96f SHA-1: 0f0cbe92a857be2a89b8bdcb86fea7495a478142 SHA-256: 0202f703099c41d7e5b83757f1264aad2fdf63662ea8265598871cf82bf1980e
156 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many of which appear to be hosted on compromised WordPress sites or disposable domains, suggesting a link farm or phishing lure. The PDF structure and embedded URLs point towards an attempt to redirect users to malicious content, likely for exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://laborke.ru/uplcv?utm_term=sensitivity+factor+of+strain+gauge+is+normally+of+the+order+of PDF link annotation
    • http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/5egbqkaocobq5529nn3cpc0bd5/vetegajivegekuxinowijaxe.pdfIn PDF document text
    • http://domplus.su/userfiles/files/kopodajezuvalexox.pdfIn PDF document text
    • https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/0gm443h6rvor8l3arp65h9175r/81714513819.pdfIn PDF document text
    • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/db7a493887b304a576b79262b24f483e/49453748629.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/16098f2bdc4055---xabatasavotifopetusozek.pdfIn PDF document text
    • http://aucoindeshalles.fr/menu/file/nudiw.pdfIn PDF document text
    • http://livinglearningandworking.org/clients/e/e0/e05af8355f71d8da3aa90f500b9284b3/File/18584983140.pdfIn PDF document text
    • http://aweibel.com/Photo/file/64058040905.pdfIn PDF document text
    • http://jualumnitoronto.com/editor/uploadfiles/85311250727.pdfIn PDF document text
    • https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/anqloc5tumue6jvcfadnifhbhr/45562576454.pdfIn PDF document text
    • https://rlvanstory.com/wp-content/plugins/super-forms/uploads/php/files/7561d84ddc322f63aa3ed76e6381e5f7/86587071200.pdfIn PDF document text
    • http://interiorconsignments.com/media/file/66530664646.pdfIn PDF document text
    • http://imaginove.eu/data/Files/44285238418.pdfIn PDF document text
    • http://ellenia3.eu/userfiles/files/98340550850.pdfIn PDF document text
    • https://migger.dk/userimages/file/gabunezofotuj.pdfIn PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092cd66b4fe8---70498893602.pdfIn PDF document text
    • https://sellerflows.com/wp-content/plugins/super-forms/uploads/php/files/4b885bd57c6fd8a28a955bd75d3cd45e/43594086999.pdfIn PDF document text
    • http://sl-light.ru/design/img/upload/file/bajog.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/m3ddc8dh73ou1abola90ou2123/xomuxidib.pdfIn PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ee4f7a6d25---61848931781.pdfIn PDF document text
    • http://extintoresorigen.com/images/editor/riwirugurinatabolalumex.pdfIn PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c02b85dce5---64356155899.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e897.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE897 17476 bytes
SHA-256: a60bd0419950fb7befb7dfe56df68fb343a37fa99f82c32983617b73153490e5
font_01_sfnt_off000115e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115E3 11276 bytes
SHA-256: c6c89f0d89cbbf20ffd6b111127aa65212b8ea61534337c209bff50fc6883349
font_02_sfnt_off00013008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13008 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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