Malicious PDF — malware analysis report

Static analysis result for SHA-256 84e463f644d86a9a…

MALICIOUS

PDF

85.1 KB Created: 2021-03-16 22:06:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 14466e612f9b1520c33b2da736ba13b4 SHA-1: b1e491a63222a6b943d7a1d040f14fe1fd498d08 SHA-256: 84e463f644d86a9ad51f3e8f44547cb5020c263d61b7b8ec613dcbe8ebcc3186
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified as malicious by ClamAV and ML classifiers. The document body, though heavily obfuscated, appears to be a lure related to satellite communication, aiming to trick the user into visiting the malicious URL. No scripts were extracted, but the presence of external links and the malware detection strongly suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/123?utm_term=antenna+types+in+satellite+communication+pdf
    • http://axecheat7.xyz/find_duplicates_in_excel_worksheets1bvfp.pdf
    • http://nijalatol.mypressonline.com/xadoxivimomerifa.pdf
    • https://cdn-cms.f-static.net/uploads/4383321/normal_60126a8226397.pdf
    • https://cdn-cms.f-static.net/uploads/4393369/normal_602d9bb37ceda.pdf
    • https://static.s123-cdn-static.com/uploads/4409796/normal_5fec1d022ba46.pdf
    • http://begefif.iblogger.org/alta_badia_map.pdf
    • https://static.s123-cdn-static.com/uploads/4452373/normal_5fe16ca598529.pdf
    • https://cdn-cms.f-static.net/uploads/4417543/normal_6047fc76688d7.pdf
    • https://cdn-cms.f-static.net/uploads/4412161/normal_604fb68043b0a.pdf
    • http://suwadebizon.mywebcommunity.org/dijikelujanomebejiruwelit.pdf
    • http://zutolewe.mywebcommunity.org/nesco_digital_pressure_cooker_manual.pdf
    • https://cdn-cms.f-static.net/uploads/4459466/normal_603513912d9c6.pdf
    • http://pokawibu.iblogger.org/john_deere_410_backhoe_for_sale_ontario.pdf
    • http://bogplaktnc.fun/toggled_on_and_off_meanings63yj.pdf
    • http://dakajak.medianewsonline.com/daido_engine_bearing_catalogue.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/f32d8377-becf-4987-906a-1282c1d22737/salenebe.pdf
    • https://uploads.strikinglycdn.com/files/9d78d10a-1de6-4619-9ec2-cf6f96aa3b08/what_is_principles_of_compiler_design.pdf
    • http://fevejalamozek.epizy.com/tutokamokigepililepalop.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010fc5.bin
62bc7df6e9a1c6814ebc9a338cf9b5a7f53709d12418b19a024d80d5e12a8edb
pdf-font-stream PDF embedded font (sfnt) at offset 0x10FC5 5296 bytes
font_01_sfnt_off000121cb.bin
b24723712d4cce682c89e31419e1deb66b8a82d1a125bfc96c2608128d446df9
pdf-font-stream PDF embedded font (sfnt) at offset 0x121CB 11012 bytes