Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc9ecc195b854199…

MALICIOUS

PDF

103.6 KB Created: 2021-02-15 10:01:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 02e26cc686821eb6100dbc8bbfb26e9f SHA-1: 18edb78851480a49bb2af75ba6104b4a2c8740aa SHA-256: bc9ecc195b854199bf66c08e2361ed3376db83e9a7d8ee90298cac1874ee05ad
184 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical alert for malicious redirector links and a high ML score. The embedded URLs point to known malicious infrastructure, suggesting a phishing or malware distribution attempt. The document body is heavily obfuscated and contains junk data, further indicating malicious intent rather than legitimate content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 5

  • 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 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 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.
  • 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://crophysi.ru/wix?keyword=geometry+worksheet+congruent+triangles In PDF document text
    • https://static.s123-cdn-static.com/uploads/4461245/normal_5fdfd4e590947.pdfIn PDF document text
    • https://pivokobofu.weebly.com/uploads/1/3/4/6/134648089/levefijazedezer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365646/normal_5ff8d66d49ca8.pdfIn PDF document text
    • https://cdn.sqhk.co/bexutavukaro/f4gcgjY/70230296854.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451375/normal_5fe74c54cd2f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455377/normal_60247b9b91ff4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472766/normal_6015d677cca20.pdfIn PDF document text
    • http://oneitshop.info/torigenezejupir93gm.pdfIn PDF document text
    • https://cdn.sqhk.co/nujekezitifi/1aihh5j/assassin_lord_idle_rpg.pdfIn PDF document text
    • https://cdn.sqhk.co/peferitukofa/iaiehfL/ants_on_a_log_celery.pdfIn PDF document text
    • https://vemegerefawobe.weebly.com/uploads/1/3/2/6/132682093/accf3f100365.pdfIn PDF document text
    • https://cdn.sqhk.co/xogudililavo/M3UiaaD/48539567323.pdfIn PDF document text
    • https://wonikisemuk.weebly.com/uploads/1/3/4/9/134902350/xapen.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412778/normal_6021fd87ae566.pdfIn PDF document text
    • https://renobikedasel.weebly.com/uploads/1/3/4/8/134897329/kejekolog-riwovadej-pesefetokusoxol-toxubowos.pdfIn PDF document text
    • https://cdn.sqhk.co/dalubevemex/hjNgeih/92537534913.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/rakabexozu/murobutux.pdfIn PDF document text
    • https://s3.amazonaws.com/tadevewuju/quickbooks_audit_trail_report.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/amazon_prime_music_windows.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000117aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117AA 3712 bytes
SHA-256: e4c29f6e5c25ca8180019edd32372b217c5d843743876115911347b72fe3e5f1
font_01_sfnt_off000124cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124CF 5384 bytes
SHA-256: 1df398edfc6ce1b41a3bdc049e40b82a97e84b4a0a0b2a59920b2256f91b3d89
font_02_sfnt_off00013718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13718 11304 bytes
SHA-256: 27b9ba8f9b75e5e4837d4f7f087bafc5c3ac0a48ab3980021f3520d40bdd68a7
font_03_sfnt_off00015d3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15D3E 16132 bytes
SHA-256: e156bfedc62d91f95b1524c214f270f61f1e4ee64fdebbdb92061788587a7b4c
font_04_sfnt_off00017228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17228 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
font_05_sfnt_off00017feb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17FEB 6224 bytes
SHA-256: 36f77e905d34c96d6166cba122fed5648e56f449cc9344e97f09260f4ed7fe2c

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