Malicious PDF — malware analysis report

Static analysis result for SHA-256 69d5bf108b9f4f99…

MALICIOUS

PDF

111.4 KB Created: 2021-06-29 12:20:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 601e30ddec8bd3afb8d928a22c04246a SHA-1: 6195147d482395c0aa90df73e3c533b5e5383207 SHA-256: 69d5bf108b9f4f9973359104aa527fbf49b9a0644fff93e62958a146ac8927e0
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is identified as malicious by ClamAV and an ML classifier, with heuristics indicating embedded JavaScript and a link farm pointing to compromised WordPress sites. The presence of embedded JavaScript suggests an attempt to execute malicious code, likely to download further payloads or redirect the user. The numerous external links, many hosted on compromised CMS platforms, indicate a phishing or spam campaign aiming to drive traffic to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607667f26ce7e---zunavikem.pdf In PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/5oevrt56cipbs0im9hm90bbid7/90143381380.pdfIn PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072a943926f9---piwogoteratirugezu.pdfIn PDF document text
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/df475d3efbb3bd7b92cb9d5acf5f434a/12335404842.pdfIn PDF document text
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608281f576bd9---zuteluwukitexogiluranur.pdfIn PDF document text
    • http://zs-g.jp/app/webroot/js/ckfinder/userfiles/files/zagel.pdfIn PDF document text
    • http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1609887c7156cd---2408148780.pdfIn PDF document text
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160ce68766823a---larosoxidafonul.pdfIn PDF document text
    • http://lab4050.com/upload/editor/file/lejalexex.pdfIn PDF document text
    • https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/rn8bfbceflo9ebk5lvr36smda5/97475002736.pdfIn PDF document text
    • http://wooshin.kr/uploaded/file/173807527160a22dd672290.pdfIn PDF document text
    • https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/f6d09887eb919add2e2d5d17f2613af4/wavix.pdfIn PDF document text
    • https://cspdental.com/wp-content/plugins/super-forms/uploads/php/files/413f66c629176eb4dbe8d509188ea2a9/41529524660.pdfIn PDF document text
    • https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/ruunnp3mecn0ah97bftu64bb71/46972665766.pdfIn PDF document text
    • http://bezagsecurity.cz/userfiles/vagejapepel.pdfIn PDF document text
    • http://www.allatpatikapecs.hu/images/file/28793424030.pdfIn PDF document text
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b37447115a3---7922670873.pdfIn PDF document text
    • https://olgapopovaphoto.com/wp-content/plugins/super-forms/uploads/php/files/d1084434905ed9d73a9c210e7987f204/katonabutupod.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/16086efdacbe76---xonajuzasa.pdfIn PDF document text
    • http://say-international.eu/userfiles/file/giwedowizamigu.pdfIn PDF document text
    • https://kaptenhoki.info/contents//files/90097270851.pdfIn PDF document text
    • http://gyobel.itpublic/file/15085793384.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=spring+boot+postgresql+create+database+if+not+existsPDF link annotation
    • 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_off00014c99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C99 18572 bytes
SHA-256: 4454f2f8acacb7c037ddd51d5524bfbc85415c9ae699c9a3e611622993e411a2
font_01_sfnt_off00017e60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17E60 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00019677.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19677 11260 bytes
SHA-256: 6d59b4274d7d083f74c9b2c4f24cd4716fea83944079356c311536bb5e05f69b