Malicious PDF — malware analysis report

Static analysis result for SHA-256 39cccb74de0e219c…

MALICIOUS

PDF

98.3 KB Created: 2020-12-16 13:02:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 102fdabbfaffbb4425cde816ed5582c8 SHA-1: 14ffdfc23feaca3e403a0b81be8a5f7fbfbd9ead SHA-256: 39cccb74de0e219c6a6dbfc202e50798f21a1fc30fdd383776cb71971ff0196e
254 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains multiple links to redirector infrastructure, specifically `traffking.ru`, which is flagged as malicious. The document body, though heavily obfuscated, appears to be a lure related to a search query, suggesting a phishing or scam attempt. The presence of numerous PDF links also indicates a potential link farm for SEO manipulation, likely to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://traffking.ru/123?utm_term=what+does+corroborate+mean+in+english In PDF document text
    • https://soxajerufoxizas.weebly.com/uploads/1/3/4/8/134880654/5906304.pdfIn PDF document text
    • https://dudabiwik.weebly.com/uploads/1/3/4/3/134354119/xuvase.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://static1.squarespace.com/static/5fc0f0de5bcb0228a282afe8/t/5fc136859d79364840b98690/1606497926105/stick_it_to_the_man_trophy_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2991b1452f90b7ff011dd/t/5fc6902eeaf37e3b6481833e/1606848558986/2506998415.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2814ec89e1c4b8fc8ad60/t/5fd1fe05ad61ab58318f437f/1607597573835/ludo_king_pc_setup_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/741e5219-38d5-4d01-a494-b1823176e9e6/42618369420.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac30822c-68aa-429e-bb59-032e8a1887b3/senatutoxilopijira.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c2e58ef7301f8b324c67/t/5fd745e089566e781f6af827/1607943649399/free_funny_christmas_card_templates.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4c1dc0b6b03258f4e1bb4/t/5fd66c5edca2215260433fe2/1607887967509/kalaxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7af58cf9-853f-4a25-8048-2264a810f632/vaterozibufaneginusi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc51c99c6d96458363d5195/t/5fcca9da5d2e6f3bda38897b/1607248346170/the_mask_scary_horror_game_download.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
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 9

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_009_off00014e59.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x14E59 18176 bytes
SHA-256: 9a53eb0f5d899206140142024e1329928d04523b9b037af6ea44b3d64dff0b7c
font_00_sfnt_off0000cf5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF5D 5588 bytes
SHA-256: f5bc79bcccde96e0b4577828538fe8bd22d5ca5975fd0c5948118d00e10227d1
font_01_sfnt_off0000e2ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2EC 5508 bytes
SHA-256: 326436fb358f0d28a2b677feb9a6cf1fb6cebaedee29a61f59e7114fa2c51cb5
font_02_sfnt_off0000f57f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF57F 2656 bytes
SHA-256: dbaab8dcf32bfe64cb008f34eb54f5316f62236e8dffe3de49b44225404383a5
font_03_sfnt_off00010083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10083 2328 bytes
SHA-256: 864cbe2c6973b44d2b71e19ffbffb2328dcb3759b07ceb43c11d5a372fc4956d
font_04_sfnt_off00010b39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B39 2108 bytes
SHA-256: d117309382da938f7dffedc42f90dd4217b4d540d75629b80669d975ecbc171e
font_05_sfnt_off00011504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11504 6640 bytes
SHA-256: 538512be6c526ea957b587fa229624d829dca4873b622d187784a60d2c877fcd
font_06_sfnt_off000126a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126A2 11844 bytes
SHA-256: 95820959da448123bc4427dfb3b5220b378568a16b32cc4ea5c2d12ed4a22b0c
font_08_sfnt_off00016b25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16B25 3276 bytes
SHA-256: c12c670e310cd2dd0f4b1ea6ea0d01ef35e1284caa1cfc967b978b02bd897c09