Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa66d2a6c8ec8567…

MALICIOUS

PDF

86.1 KB Created: 2021-03-17 04:11:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: c5d5deef54b2f85526659d49458f9412 SHA-1: 5e4b293bb2e80c952fd5b736c164becccbe781c5 SHA-256: fa66d2a6c8ec856718e834d93011abd19dd36deb2d11722374f98927db5f3906
184 Risk Score

Malware Insights

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

The PDF contains embedded links to known malicious redirector infrastructure, specifically pointing to 'https://yafferge.ru/award?keyword=beden+dili+nedir+pdf'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to 'beden dili nedir pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://yafferge.ru/award?keyword=beden+dili+nedir+pdf In PDF document text
    • https://cdn.sqhk.co/gixixutiji/1chbjEE/25528931737.pdfIn PDF document text
    • http://nodefiw.medianewsonline.com/womebavugedolikujemuvif.pdfIn PDF document text
    • https://pobanebutu.weebly.com/uploads/1/3/4/5/134592169/700aab92.pdfIn PDF document text
    • https://cdn.sqhk.co/lazujanaziri/gg6jdLo/formerly_utilized_defense_sites.pdfIn PDF document text
    • https://xexiwimelogodit.weebly.com/uploads/1/3/4/5/134593193/c6a04.pdfIn PDF document text
    • https://gofikebome.weebly.com/uploads/1/3/4/8/134847018/dubumebiwemuriw-ligoxiwa-jiditowef-kokowazar.pdfIn PDF document text
    • http://subejewumo.scienceontheweb.net/97004911515.pdfIn PDF document text
    • https://ponusowugam.weebly.com/uploads/1/3/4/4/134438000/sonabumirelumow_musubavizojapen_biramavemelo.pdfIn PDF document text
    • https://cdn.sqhk.co/pakevetuzi/rdiashc/94328728866.pdfIn PDF document text
    • http://nokasosozigof.mypressonline.com/56893269829.pdfIn PDF document text
    • https://bixuduserar.weebly.com/uploads/1/3/4/8/134861961/jakipenab_pugerozi.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://b8e64ff8-a522-4625-8e91-70fe47930cb2.filesusr.com/ugd/37987b_6ad9a33436ac442b8253c1dfef537fab.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/51f75d59-e94b-4c2b-acad-62afe0030f5b/free_world_map_template_printable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/474c2f0b-51cf-4c8b-80e6-324152a6eb60/lunojijejinakavuwusoxovu.pdfIn PDF document text
    • https://c3373aeb-ed74-4f2d-b631-fa679e0a3f6f.filesusr.com/ugd/cbe7f7_3fda58809dfc4837977043c6f2934506.pdf?index=trueIn PDF document text
    • https://1923692e-f727-4f58-80a8-3583160180e3.filesusr.com/ugd/c4ccc4_39d40678920c437ea988fdc5b98ce992.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/popilo/assassin_s_creed_identity_apk_latest.pdfIn PDF document text
    • http://watusatuvor.myartsonline.com/apache_airflow_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/63478917319.pdfIn PDF document text
    • https://03f57db0-fbcf-46ec-8713-21b5992b8512.filesusr.com/ugd/455f95_f31b974ee57e44a28002704a20877309.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e48b8ab6-6504-4404-a779-638cf867169f/24275057160.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/tukoragetubevukoxi.pdfIn PDF document text
    • https://s3.amazonaws.com/zexozavo/94819256256.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_off000106df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106DF 4292 bytes
SHA-256: 1d704b8c9de6783f404fa7ddf485b896f1c5aa59286721a04242acd576bcf56a
font_01_sfnt_off00011564.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11564 12288 bytes
SHA-256: 85caf019cbf6e6118ff83d66d13b466427c448f2836aa9a16bfa6bae24876078
font_02_sfnt_off00013b4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B4E 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230