Malicious PDF — malware analysis report

Static analysis result for SHA-256 dccc6bdc471d8bcf…

MALICIOUS

PDF

83.4 KB Created: 2021-01-08 04:49:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 411902d2eecd882ee4d5d3c0466aa2e2 SHA-1: f34bb8e03edb87bdb33038d0065fcfc4b9096778 SHA-256: dccc6bdc471d8bcf2a53b791a16f1601191b2f7e745ec5fcba6bfb4ab3e2dbd6
214 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://ggtraff.ru/123?utm_term=book+of+the+righteous+pdf In PDF document text
    • https://cdn.sqhk.co/zurefaxenov/jUgiVp7/84689442988.pdfIn PDF document text
    • https://cdn.sqhk.co/tipefimex/ijheChj/61756722891.pdfIn PDF document text
    • https://fepobiwebefu.weebly.com/uploads/1/3/4/5/134592484/1272907.pdfIn PDF document text
    • https://vawuzusafut.weebly.com/uploads/1/3/4/8/134863851/nutogatilesepi.pdfIn PDF document text
    • https://mulibini.weebly.com/uploads/1/3/4/8/134881685/d8a2655a2bd.pdfIn PDF document text
    • https://cdn.sqhk.co/velizovatim/hCdhbH6/skyblock_roblox_script_2020.pdfIn PDF document text
    • https://tasimaxexakopox.weebly.com/uploads/1/3/2/6/132681882/4431036.pdfIn PDF document text
    • https://cdn.sqhk.co/bofilewidil/aghTVgg/pijuvizigopesil.pdfIn PDF document text
    • https://cdn.sqhk.co/nezerozara/ggjjhbO/simpsons_tapped_out_hack_iosgods.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lokijuronig/apex_legends_weapon_upgrade_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/dirty_minded_jokes_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/ruvigixolaxolubitupo.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/30214346269.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE70 4952 bytes
SHA-256: 829503ced71609787c382e0900b18fdbcbbf38e51eca769001b1475b9f1d703c
font_01_sfnt_off00010f6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F6F 10428 bytes
SHA-256: ae30144872de39e4ea14eaa6646a0a86402b181528d2b11b2b09a1aabcd10e93
font_02_sfnt_off000132ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132EF 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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